Click Here For A Complete List Of Over 1,300 Articles From Mint Error News
Jim Halperin's Collection of Fraser Plasters
There are a few Fraser plasters that are included in his private collection...
1932 Laura Gardin Fraser Quarter Plaster and Original Photograph
This 1932 quarter reverse plaster model for Laura Gardin Fraser's winning 1932 Washington Quarter submission is an amazing and significant discovery...
Mint Error Coin Chronicles: Rotated Dies Error
The orientation of the two sides of a coin in relation to one another should be consistent; when it's not, this error occurs...
Flying With Your Coins!
Air travel is the fastest method across the USA with coins and here are a few suggestions for your journey...
Unique Pair of Judd #2210 Martha Washington 5¢ Test Pieces
Newly redesigned Martha Washington dies were used to strike test pieces at the United States Mint...
Unique Peace Dollar Splasher & Plaster by Anthony de Francisci
Quite simply there are no other known splashers or plaster models of the de Francisci 1921 Peace Dollar...
Unique Mated Pair of Proof Ike Dollars Struck Off-Center on 1¢ Planchets
This unique proof mated pair of Eisenhower Dollars was sitting in an old-time collection for decades...
A Collection of Flying Eagle & Indian Cent Mint Errors
Charmy Harker "The Penny Lady®" wanted to share her collection of Flying Eagle and Indian Cent Mint Errors...
Collecting Double Struck Error Coins
A favorite of every error coin collector is to have a double struck error coin in their collection...
Major Errors Struck by Private U.S. Mints
Major mint errors from silver rounds to gambling tokens are very popular and are eagerly sought out by collectors...
The "Libertas Americana" Metallurgical Trial Pieces
These pieces are fascinating pieces of history and this article attempts to list a complete census of the known specimens...
Unique Proof Kennedy Half Bonded Pair With Struck In Copper Planchet
This bonded pair of a Proof Kennedy Half and a 1.6 gram Copper planchet is unique and visually breathtaking...
A Dramatic Struck Thru Error - The "1861 Buffalo" Quarter
This "1861 Buffalo" Quarter is an especially appealing struck-thru grease Quarter, both for its eye appeal and subject matter...
Unique Proof Ike Dollar Struck on Silver Clad Layer
This 1976-S Proof Type 1 Eisenhower Dollar is unique among Ikes, and all U.S. Dollars, of all years and types...
Unique 1972-S Lincoln Cent on Struck Silver Dime
Although this was an intentionally struck mint error, it is unique and very dramatic...
Unique 1972 Eisenhower Dollar Overstruck Twice With 1972 Cent Dies
One of our readers wanted to share his amazing Eisenhower Dollar mint error...
Two Incredible Kennedy Half Mint Errors
A reader of Mint Error News who collects rare proof U.S. mint errors wanted to share two special Kennedy Half mint errors from his collection...
Error Coin Collection
One of our readers wanted to share his collection of error coins and numismatic rarities...
A Cosmic Error You Have To Look To The Stars For!
To this day, not very many people are even aware of this error...
Bicentennial Ike Dollar Struck on 40% Silver Planchet
This is an amazing and extremely rare Eisenhower Dollar off-metal...
Struck Thru Error Coins
Major struck thru error coins are very interesting and extremely collectable...
1973-S Blue Ike Struck on Clad Planchet
This is an amazing and extremely rare Eisenhower Dollar off-metal...
Unique Broadstruck 1906-D $20 Liberty Gold Double Eagle
This is the only known United States $20 Gold Piece that was broadstruck out of the collar...
Collecting Carson City Errors
My Journey started as a young man where I collected coins and enjoyed the hunt more than anything...
A Closer Look: The GSA 1882 Carson City Morgan Dollar Off Center
There is more than meets the eye when looking at the 1882-CC off-center GSA Morgan dollar...
Unique Double Eagle Reverse Hub Trial in Lead
This is a unique $20 Double Eagle reverse hub trial attributed to 1857...
Lincoln Dime Mule Census
These are particularly eye appealing and generally it appears that the smaller dime size die does not have any cupping effect on the struck coin...
Ask Dave
Dave Camire, NCS President, NGC Finalizer and NGC Mint Error Expert answers your numismatic questions...
Eye Appeal And Error Coins
Error coin collectors look at eye appeal as the most important factor in evaluating a coin, even more so than the grade...
Analyzing A Fake Die Cap
The following is an interaction that I had with one of my customers who thought they had a genuine mint error...
Unique Triple Struck Flipover Peru Gold 8 Escudos
This 1741 Peru Gold 8 Escudos is a very rare South American gold coin...
Extremely Rare Lincoln Cent Wheat Ears Struck Off-Center on Silver Dime Planchet
This is an extremely rare off-center Silver Cent...
Pattern "Struck-Overs"
Pattern coins, by definition, are experimental pieces created to test new designs, different metal alloys...
The Errors All Around Us
In coin collecting circles we often see a lot of emphasis placed on searching for coins of certain dates...
World Error Coins and the PDS Error System
The (Planchet, Die, Striking) PDS error classification system is simple and easy to remember for collectors...
A Collection of Romanian Error Coins
This is a journey through the modern Romanian history illustrated by my error coins from this nation...
1875-S 20 Cent with Reeded Edge
It is possible that it was a mint error and somehow was struck with a reeded edge at the San Francisco Mint...
Detecting Alterations to Coins to Appear as Errors
There are many signs illustrating why this coin is yet another altered coin meant to fool collectors...
The Subjectivity of Pricing
The pricing of patterns is very subjective...
Collecting Clipped Planchet Error Coins
Error collectors usually end up collecting different types of clip error coins...
PCGS Certifies a Cent Bonded to a Magnetic Screw
This is one of only two known Lincoln cents that were bonded with a magnetic screw...
Mint Error Coin Chronicles: Broadstrikes
Coins that lose their collars end up running loose beyond their boundaries...
Proof Ike Dollar Double Struck on Kennedy Half Dollar Planchet
This is one of the most spectacular Proof Ike Dollar Mint Errors available today...
Unique Proof 1973-S Kennedy Half Dollar Double Struck on Washington Quarter Double Denomination
It is a unique double struck double denomination and belongs in a world-class mint error collection...
Proof Ike Dollar Struck on Clad Dime Planchet
These are very rare and highly prized by Ike Dollar collectors and mint error collectors...
1873 Closed 3 $5 Unique Specimen with Experimental Finish
This unique 1873 $5 Closed 3 Specimen strike has an experimental finish and is a hybrid between a proof and a mint state coin...
Counterfeit Detection: Spark-Erosion 1874 Three Cent Nickel Die Trial
Three Cent nickels were struck in 75% copper and 25% nickel with a silver-gray color, but the coin submitted to NGC appeared to be made entirely out of copper...
Mushroom Error Coins
These coins are larger than a normal size coin with some examples that have expanded to a huge size...
Proof 197X-S Ike Dollar Double Struck on 2 gram Aluminum Shell Gas Token
This is an amazing and spectacular proof major mint error...
Mint Error Coin Chronicles: Partial Collars
A Partial Collar error occurs when there is a malfunction of the striking press...
1968-D Penny Struck on a Silver Dime Planchet
This is the rarest type of U.S. transitional off metal mint error...
NGC Certifies 1943 Lincoln Cent Struck on Curacao 25 Centstukken Planchet
This world-class 1943 Lincoln Cent major mint error is many times rarer than the 1943 copper Cent...
Mint Error Coin Chronicles: Transitional Errors
Errors where a previous year's planchet was used are some of the most exciting in all numismatics...
Struck Thru Cloth Error Coins
Coins have been struck thru all different types of materials and objects leaving an impression of the item in the coin...
Hawaiian Mint King Kalakua 1883-1983 Kala Dala Proof Struck on Scrap
The proof error coins shown here were broadstruck on an off metal piece of scrap...
USPatterns.com - Mint Errors Mistaken For Patterns
In many cases, the error pieces listed are rarer and more valuable than the die trials they are confused with...
David Camire Visiting Mints Around The World
David has visited all three US mints (numerous times) and continues to add to his world mint visits...
Collecting Ultra Modern Major Mint Error Coins, 2002 - Present
Collecting ultra modern mint error coins is fascinating because there are so many different designs and error types possible...
USPatterns.com - Pattern Mint Errors
Here are some examples of misstruck pattern pieces...
Certified but Not Graded: Adjustment Strikes, Struck Thrus & Other Mint Errors
There are a few types of error coins that are eligible for NGC certification, but do not receive a grade...
Counterfeit Detection: 1942 Lincoln Cent Mint Error
What looks like a double strike will make you do a double take, but it's not real...
Counterfeit Detection: 1955 Doubled-Die Obverse Cent
This off-center coin proved too good to be true...
Extremely Rare "Peacock" Variant 150 Yuan 20oz Silver Coin
An exceptional and nearly flawless example of this important variant of the "Peacock" 150 Yuan...
Unique Standard Silver Dime Off-Metal Proof Pattern
This is a unique and spectacular mint error, a proof pattern off-metal...
Amazing 2016 Shield Cent Multiple Mint Error
This amazingly rare modern cent major error coin has so much going on...
Netherlands Silver 1/2 Ducaton Pattern in Proof
The only known proof of these ducaton coins are the gold ones...
Unique 1977 Lincoln Cent Struck in Aluminum at The Philadelphia Mint
There are several possibilities as to how this unique Lincoln Cent was produced...
Liberty Seated Dime Struck Off-Center With Obverse Partial Brockage
This is an amazing and unique combination of major errors on a Seated Dime...
Extremely Rare $50 Gold Eagle Double Struck Partial Collar
Major Mint Errors on the 1oz Gold U.S. $50 American Eagle series are very rare...
Unique California Fractional Gold Incomplete Punched Planchet
A fascinating aspect of this mint error is that the partially punched planchet is octagonally shaped...
Unique Pair of California Fractional Gold Clipped Planchets
This is the only known double clipped planchet on any fractional gold coin...
Spectacular State Quarter Die Cap
The die cap is so deep and the "exit strike" is at such an angle creating a shape like a baseball-cap...
Extremely Rare California Fractional Gold Overstrike
This is a 1863 California Fractional Gold 25¢ overstruck on a previously struck 1860/50 Gold 25¢...
Unique & Unlisted German 5 Mark Die Trial
This unique and unlisted Germany 5 Mark reverse trial strike is the adopted design in silver...
Extremely Rare Buffalo Nickel Off-Metal
This amazing fully lustrous Buffalo Nickel struck on an Argentina 10 Centavos planchet...
American Bank Note Company Experimental Stamp Printing Plate
This experimental stamp printing plate from the American Bank Note Company is one of only two known...
Unique American Bank Note Company El Salvador Stamp Printing Plate
It features a set of all four different denominations of stamps on the plate...
Official Royal Mint Plaster for the Great Britain 1983 One Pound
This is a fascinating official Royal Mint plaster that was designed for the reverse of the new Great Britain 1983 One Pound coin...
1938 New Rochelle Half Dollar PCGS Specimen 67+ CAC
This PCGS Specimen 67+ CAC is the second finest known...
1831 Proof Gold ½ Sovereign DOUBLE STRUCK
Interestingly, despite the high production standard for this Proof offering, its legends show faint traces of being double-struck...
Gold-Plated Brass Maple Leaf Die Trials in Lucite
This is a fascinating and historical set of Gold-Plated Brass Die Trials issued by the Royal Canadian Mint...
Double Struck 1904 $20 Liberty Rotated 180 Degrees in Collar
Major mint errors on U.S. gold coins are extremely rare...
Extremely Rare Bavarian Gold Service Medal
This is an amazing world-class numismatic treasure, combining several numismatic and historic factors...
Proof Kennedy Half Dollar Double Struck on a Gas Token
This is an amazing and spectacular proof major mint error...
Unique Double Denomination Kennedy Half Dollar on a Quarter
It is the only known Kennedy Half Dollar from 1965-1970 struck on a struck Quarter...
The Northern Nevada Dollar Error Gallery
We enjoy collecting dollar errors because with as many dollars as we buy and sell day in and day out errors in this series are still rarely seen...
Learn Grading: What Is a Mint Error?
This installment in the series covers mint errors that can occur when something goes wrong with a coin's planchet...
Off-Center Lincoln Cent With Retained Wire Bristle
The reverse of this 1998 way off center cent has a struck in and retained wire bristle...
Lincoln Cent Cancelled in India?
One of our readers found this interesting Lincoln Cent that has been cancelled with a unique pattern...
Pair of Ethiopia 10 Dollar Silvered Bronze Specimen Pattern Uniface Die Trials
They are a matched set of obverse and reverse uniface die trials from 1972...
Unique Canadian $20 Specimen Test Print
This incredible and unique test print is for the Canadian 1954 $20 face and back...
Unique Off-Metal Canadian Mint Error
This unique Canadian 50¢ dated 1970 is struck on a 72% silver and 28% copper off-metal planchet...
A Collection of India Patterns & Die Trials
I recently acquired this set of patterns & die trials of a rare Baroda Rupee...
Unique & Unrecorded Proof Great Britain 1/2 Sovereign Gilt Reverse Pattern
This is a unique and unrecorded proof gilt reverse pattern for the 1831 Great Britain William IV 1/2 Sovereign...
Uruguayan "Two Tailed" Dual Date, One Peso Mule
Major errors from Uruguay are nearly unheard of and this is the first mule error from this country I have ever seen...
NGC Certifies Canada $15 Struck on Gold Planchet in Custom Multi-Coin Holder
One of the four-known 1992 Canadian "Spirit of the Generations" Olympic silver coins to be struck in pure gold...
Pair of Gold Lincoln Medal Overstrikes Certified by NGC
This is a fascinating pair of gold overstruck coins with an enigmatic history and production...
PCGS Certifies German Gold Obverse Die Trial Strikes
It is amazing that after 500 years, this set of gold Die Trials remained together, intact and preserved in gem mint state condition...
Unique Ethiopia Double Struck Gold Mule
All gold mules are rare and this mule is unique for several reasons...
Unique Great Britain Queen Elizabeth II Crown Trial Strike
This is a unique Crown die trial strike (1957) for preparing the copper-nickel Crown for Queen Elizabeth II in 1960...
Belgium Silver 50 Centimes Mule
The reverse die is dated 1899 but was incorrectly muled with an obverse die dated 1907...
Lincoln Cent Double Denomination Mint Error
It is the first year that dimes were struck in the clad composition and this is in demand in the 11-cent series...
1900 Indian Head Cent Multi-Struck 20% Off-Center On A Silver Dime Planchet
This unique and spectacular mint error was intentionally struck at the U.S. Mint in Philadelphia...
1882 Shield Nickel Struck On A Cent Planchet
This Shield Nickel was struck on a bronze planchet that the U.S. Mint intended to use for the production of Indian Cents...
An Exciting Collection of Major Mint Error Coins
I wanted to share some exciting error coins with the readers of Mint Error News...
Unique Set of Mexico Proof Pattern Mint Errors
This is a unique, incredible and dramatic set of 5 proof pattern mint errors...
NGC Counterfeit Detection: 1954-D Quarter (Counterfeit Second Strike)
This coin is real, but the second strike error is not...
Unique Netherlands Gilt Cardboard Pattern
Most cardboard trials are struck on just one side, but this one is made like an actual coin...
Unique Mated Pair of U.S. Currency Errors
These $5 1950 notes stayed together during the entire printing and production process...
Unique Civil War Merchant Token Mule
This famous unique Civil War merchant token as been in some of the world's finest numismatic collections of Civil War tokens...
A Collection of Bicentennial Washington Quarter Mint Errors
I wanted to share some Bicentennial Washington Quarter Errors with the readers of Mint Error News...
Another "Off-Metal" World Coin Struck on a Different Country's Planchet
This type of major error is exceedingly rare, but in this case I consider it to be unique...
A Unique Great Britain Guinea/Sovereign Pattern
Recently surfaced after 200 years...
Washington Quarter Struck 70% Off Center on a Clad Layer Uniface Reverse
I bought this coin thinking that it was an off center statehood quarter that split after striking error...
2007-D SMS Dime Obverse Die Cap
In 2007 a batch of rare major error coins came out of the Denver mint...
A Unique Great Britain Mule
It is a proof-only date and even rarer as a mule with the threepence obverse...
Martha Washington Reverse Die Used To Strike 1 Cent Experimental Test Pieces For U.S. Judd #2180
There is only one other known Martha Washington Die in private hands...
More San Francisco Mint Off-Metal Errors
I wanted to share some more San Francisco Mint Off-Metal Errors with the readers of Mint Error News...
NGC Grades Mistakenly Released Reverse Proof Cent
The coin was not supposed to be available to the public until mid-April...
U.S. Lincoln Cent Overstruck by Bolivian Dies
A unique error that is both dual country and a double denomination...
PCGS Certifies Ike Dollar Struck Off-Center on Taiwan $1 Planchet
The coin was close to the size of a quarter but lacked the clad layers...
ICG Certifies 2019 Silver American Eagle Major Struck Thru
There is extended plastic free floating in the ICG custom slab...
A Collection of San Francisco Mint Off-Metal Errors
I wanted to share this group of San Francisco Mint Off-Metal Errors with the readers of Mint Error News...
NGC Certifies Unique Great Britain Proof Gold Pattern
This unique gold pattern portrays a new portrait of Queen Victoria on the obverse...
NGC Certifies Unique Pair of Lincoln Medal Die Trials
These Lincoln medals are uniface since each die was tested separately on a lead planchet...
U.S. Nickel Overstruck by Chilean 10 Pesos Dies
This error likely occurred when the nickel was tossed into a bin containing 10 pesos planchets at the Santiago mint...
Canadian Mint Errors
Here are some Canadian mint error that I wanted to share with the readers of Mint Error News Magazine...
A Collection of Euro Errors
One of our readers from the Netherlands wanted to share his collection of Euro mint errors...
Extremely Rare Buffalo Nickel on an Elliptical Planchet
There are only 2 known for the entire series from 1916 to 1938...
NGC Certifies Unique Argentina 8 Escudos Silver Die Trial
It is fascinating that this unique obverse silver die trial exists for the already excessively rare gold 8 Escudos...
PCGS Certifies 1875 20 Cent Die Trial
There are only 3 known die trials in the entire 20 Cent series...
Magnetic Screw Struck and Bonded onto Cent
I wanted to share this incredible mint error with the readers of Mint Error News...
Strike Clips
Among the different kinds of clipped coins is a rare type called a Strike Clip...
Legendary Off-Metal Error
Wartime demand for copper caused the U.S. Mint to change the composition of the Lincoln cent planchet in 1943...
A Collection of Russian Mint Errors
Mint error collector Alexander Filer from New Jersey wanted to share his incredible collection...
Argentina Striking Errors
Argentina provides us with two striking errors...
Martha Washington Obverse Die
Used to strike half dollar experimental test pieces for U.S. Judd #2131...
Unique Chilean Numismatic Rarities
This is a spectacular collection of Chilean unique numismatic rarities...
Mint Error News Special Section: An Incredible Collection of World Mint Errors
Jeff Ylitalo decided to share part of his fantastic world error collection...
Counterfeit Detection: Australia 1944 Florin Die Cap
The sharply defined reverse reveals this florin die cap to be counterfeit...
NGC Certifies Rare 1942 and 1943 Wrong-Planchet Cents
Two previously unknown 1943 "copper" cents and two other wrong-planchet errors were recently certified by NGC...
A Visit With Fred Weinberg
It is always a pleasure to visit Fred Weinberg in his office to conduct business...
What Are Struck-Throughs?
Struck-throughs range from very small to large...
Doubled Dies vs. Machine Doubling
The distinction between genuine die doubling and mechanical doubling can be subtle...
A Collection of State Quarters Struck on Elliptical Planchets
U.S. coins struck on elliptical planchets are scarce, making this an impressive collection...
Unique "Two Tailed" Off-Metal
This is one of two known U.S. or World Coins in numismatic history that were struck by either two obverse or two reverse dies and struck on an off-metal planchet...
Unique Double Struck Peace Dollar
Major mint errors in the U.S. Peace Dollar series are very rare...
NGC Certifies Colombia Pattern Oddity
NGC recently certified a 1918 10 Peso pattern struck over a US WWI-era pin...
Highest Prices Realized for World Mint Errors in Heritage Auctions
The following coins sold in past Heritage Auctions...
PCGS Certifies 1945 Netherlands East Indies Cent STRUCK IN GOLD At The U.S. Philadelphia Mint
This is a proof pattern gold striking of KM-316...
A Collection of American Eagle Errors
A reader of Mint Error News wanted to share his collection of rare American Eagle major mint errors...
Fred Weinberg's Price List of Major Mint Error Coins & Currency
Wholesale prices list of major mint error coins & currency...
Rare Mint Error Found on a 2015 Silver Eagle
A rare curved clip mint error is found on a 2015 American Silver Eagle bullion coin...
Undated Double Eagle Obverse Die Trial Judd-A1859-10, MS64 Unique Die Variant
This is a unique striking and the only splasher of the Type One twenty...
NGC Grades Dramatic Error 1986 Silver Eagle
A rare and prominent mint error was identified on a 1986 Silver Eagle that was found in a Mint-sealed box...
5 Crowns Struck In Gold
Only one was approved as a final production piece...
World Errors
It is the first euro/non-euro transitional error coin I have encountered...
Presentation Set of Federal Reserve Proofs
These Proofs were printed from the actual currency plates on to card stock...
World Errors
I wanted to share these world errors that I've recently purchased with the readers of Mint Error News Magazine...
Proof U.S. Quarter Struck Over Canadian Quarter
This is a dramatic mint error since it involves two different countries and 29 years between strikes...
Walking Liberty Half Dollar Off-Metals
This spectacular 1945 Walking Liberty Half Dollar was struck on a Dime planchet...
Variety vs. Mint Error
Are you confused about varieties and mint errors...
Proof Paper Impressions
These previously unknown examples of Proof Trial strikes were produced at the San Francisco Mint...
National Gold Bank Note Face Specimens
Here is a set of National Gold Bank Not Face Specimens from The Kiddler National Gold Bank of Boston...
1923 Peace Dollar Clipped Planchet GSA Soft Pack MS 64 NGC
It is exciting that this mint error is still in the U.S. Government GSA Soft Pack holder...
Small Dollars Missing Edge Lettering
A comprehensive photographic overview of small dollar coins exhibiting a very popular type of error...
2 Double Denomination National Bank Notes
Here are the finest known and unique pair of Double Denomination U.S. $20 & $10 National Bank Notes from 1882...
Five-Piece Set of No 'S' Proof Coins
This Five-Piece Set of No 'S' Proof Coins is featured in the upcoming 2010 April-May Milwaukee, WI CSNS US Coin Auction #1139...
NGC Error Coin Gallery
State Quarter mint errors are very popular with collectors...
1964 Double Denomination Errors
Double Denomination U.S. mint errors are very popular and in great demand by mint error collectors...
NGC Certifies Standing Liberty Quarter Struck On A Cent Planchet
Major Standing Liberty Quarter errors are extremely rare...
PCGS Certifies Type 2 $1 Gold Piece Full Brockage Reverse
This unbelievable U.S. Gold Brockage recently surfaced at the 2009 ANA held in Los Angeles...
Having Residual Concerns About Residue?
A closer look at "residue" on the surface of coins...
Indian Cent Mint Error Collection
NGC recently certified Xan Chamberlain's personal collection of Indian Head Cent errors...
How To Tell A Premium Off-Metal Mint Error
What can determine an average off-metal error to a premium error...
Historical Test Strike From Sweden
This object is a part of my collection of Swedish pattern coins...
1971 Swedish Bonded One Kronas
To this day, this is the only known bonded Swedish coin...
Canadian Mint Errors
I collect major Canadian mint errors and would like the readers of Mint Error News Magazine to enjoy them too...
Presenting The World's Most Valuable Major Mint Error!
PCGS Certifies the Finest Known Indian Head Cent Struck in Gold...
Curved Clip Coins
Learn the Diagnostics of Authentic Mint Made Curved Clips...
Pattern Overstrike Certified by NGC
Previously Unreported and Believed to be Unique...
Rare Russian Swedish Overstriking
It was first struck as a Swedish 1 öre SM 1746 and then overstruck in Russia as a 1 Kopek 1758...
Story of the Bolivia 1942 50 Centavos Struck at the Philadelphia Mint on US Wartime Nickel Planchet
It stands as the only, and therefore finest known example...
2000-P "Cheerios" Dollar
Nearly all known examples were originally found in occasional boxes of Cheerios cereal...
Sacagawea Mated Pair
Here is one of the most exciting mated pairs of U.S. coins that I have ever handled...
The United States Department of the Treasury $100 Specimen Note
The specimen featured here included information from the United States Department of the Treasury regarding new security features...
What Is A Variety?
There seems to be some confusion as to exactly what constitutes a variety...
2007 Denver Errors
Even though the U.S. Mint has drastically reduced the inadvertent release of major mint errors in the last few years, a few mint errors struck by the Denver Mint in 2007 recently surfaced...
1984 Mint Error Catalog
Here is another in a series of Mint Error Catalogs from Fred Weinberg...
1903 Louisiana Purchase Three-Piece Cardboard Die Trial Certified By NGC
The cardboard has a rich, deep gold color, obviously meant to suggest the gold dollars that were soon to be struck...
Certified But Not Graded: Adjustment Strikes, Struck Thrus and Other Mint Errors
There are a few types of error coins that are eligible for NGC certification, but do not receive a grade...
NGC Certifies Previously Unaccounted 1943-S Bronze Cent
A previously unrecorded 1943-S Lincoln cent, erroneously struck on a bronze planchet and found in circulation by a teenaged collector over a half century ago, was recently certified...
South American Error Coins
Here are some photos of South American Error Coins that were submitted by one of our readers...
50 Year Old Crazy Kid
Then I started hearing about the "error" coins being found and I went into a new frenzy looking closely at all my state quarters...
1983 Mint Error Catalog
Here is another in a series of Mint Error Catalogs from Fred Weinberg...
1903 Louisiana Purchase Three-Piece Cardboard Die Trial
Cardboard impressions are obviously rare but they date back to 1849 for the gold dollar...
1983 China Mint Tour
I have had the opportunity to take numerous tours of the official government-run Shanghai Mint through the years...
A Quartet of Swedish Double-Strikes
I wanted to share this group of four 5 öre coins from the last 100 years of Swedish coinage...
Unique Gold Solidus
The coin has two reverse sides...
World Errors
Here are some more rare and unusual major mint errors from around the world...
1982 Mint Error Catalog
Here is another in a series of Mint Error Catalogs from Fred Weinberg...
World Errors
Here are a few of the more dramatic ones...
Presidential $1 Error Coins: James Monroe
NGC has certified a few James Monroe $1 edge lettered planchets...
Chile and Costa Rica Errors
One of the readers of Mint Error News Magazine wanted to show three of his world errors from South America...
Unique Fold-Over Clock
This fold-over clock represents the only known clock of twelve fold-over Cents...
1981 Mint Error Catalog
Here is another in a series of Mint Error Catalogs from Fred Weinberg...
World Errors
Here are a few World Errors that I recently purchased from a collection that was assembled over many years...
Presidential $1 Error Coins: 2007 Proofs
As a general rule, modern proof error coins are scarce...
What Are Die Caps?
A die cap is caused when a struck coin sticks to the upper hammer die...
1979 Mint Error Catalog
Here is another in a series of Mint Error Catalogs from Fred Weinberg...
World Errors
Here are a few World Errors that I recently purchased from a collection that was assembled over many years...
1978 Mint Error Catalog
Here is another in a series of Mint Error Catalogs from Fred Weinberg...
Presidential $1 Error Coins: George Washington
This is the first in our new article series featuring Presidential $1 Error Coins...
Presidential $1 Error Coins: John Adams
Just like the Washington $1 coins, the Adams coins show an abundance of edge lettering errors...
1998 Cent Struck On An Unplated Foreign Zinc Planchet
Wrong planchet/off-metal errors are always in demand, and doubly so if they are accompanied by another error...
1979 Mint Error Catalog
It is always exciting to compare current mint error prices with those from decades ago...
Two New "Extrusion Strikes"
Extrusion strikes provide a fascinating exception to the notion...
Fascinating Mint Errors
The new error coin collector would enjoy viewing these spectacular pieces...
Mint Error Prices: Then & Now
Readers who are starting to collect mint errors will find it interesting to compare today's prices of major mint errors with those of 1975...
Mint Error News Museum: Gold Errors
These are exciting and dramatic examples of major mint errors that we wanted to share with our readers...
Al's Coins 2007 Mint Error Price List
Specializing in Mint and Currency Errors for 25 years...
Fred Weinberg's Price List of Major Mint Errors & Currency
We proudly offer many dramatic & very Rare Type coins, and more current Errors (1960's + 1970's) that have not been on the market for 20-30 years...
PCGS Certifies 1965 English Penny Struck on a Gold Planchet
This is one of the most spectacular major mint errors of all time...
1864 Large Date 2¢ Struck on a 1¢ Planchet
Major mint errors in the 2¢ series are very rare...
Pennsylvania Quarter Double Struck Mated Cap Pair
This is a spectacular and very dramatic mated cap pair...
1943 Lincoln Cent Struck on a Cuba One Centavo Planchet
This 1943 Lincoln cent off-metal struck on a Cuba blank is unique...
1867 Shield Nickel With Rays Struck on Wrong Planchet
Shield Nickel off-metals are extremely rare...
World Mint Errors
I wanted to share some of my recent world mint error purchases with the readers of Mint Error News Magazine...
Morgan Dollar Reverse Die From San Francisco Mint
There are only a few known Morgan Dollar canceled dies from the San Francisco Mint...
1859 Indian Head Cent Deep Obverse Die Cap
This die cap struck so many blanks that it barely fits in the PCGS slab...
1862 Indian Head Cent Deep Obverse Die Cap
This obverse die cap is so deep that it will not fit in a PCGS, NGC, ANACS or ICG holder...
Coin Punch Presses
Here are photos of two different types of punches used at different times at the U.S. Mint...
Blanks & Planchets - The Best Little Secret In Errors
Collecting Blanks & Planchets can be one of the most challenging collecting areas...
2004 Malaysian 10 Sen Die Cap Mated Pair
Coin #1 is a Deep Die Cap and mated to Coin #2, which has an expanded uniface obverse...
Mated Pair of U.S. $1 Silver Eagles Certified by PCGS
This is a spectacular One Dollar Silver Eagle mated pair struck at the Philadelphia Mint in 1986...
The Milt Cohen Collection
It is fascinating to not only view all of the rarities that were in his collection, but also to remember where some of them have gone over the years...
Rare Kennedy Mated Sets Surface After Forty Years
These were unknown until this small group was discovered...
Unique SBA Dollar Mated Pair
This is one of two known mated pairs of SBA Dollars...
Kennedy Half Dollar Die Cap
This is the largest Kennedy Half Dollar mint error that I've ever seen...
1999 SBA Dollar Multi Struck Die Cap
This is the largest SBA Dollar mint error that I've ever seen...
1863 Indian Cent Reverse Die Cap
This is a spectacular and dramatic deep dish shaped reverse die cap and is the size of a U.S. quarter...
Indian Cent Cu-Ni Reverse Die Cap
Reverse die caps in the Indian cent series are actually rarer than obverse die caps...
1865 2¢ Obverse Die Cap & Brockage
This is a spectacular 2¢ Die Cap...
NGC Certifies Double Struck 1873 $20 J-1344
This is an extremely rare pattern which is also double struck...
1861 Clark, Gruber & Co. Twenty Dollar (K-8) Struck Over an 1853 U.S. Assay Office Twenty Dollar (K-19)
This unique piece was unknown to us until a couple of years ago...
1829 Large Cent First Strike Brockage Reverse
Most Large Cent brockages are very circulated and show the incuse wreath on the obverse...
Braided Hair Large Cent Struck 35% Off-Center
It is one of the finest known off-center Large Cents...
Unique 1838 $5 Die Trial Splasher J-A1838-6
PCGS recently authenticated and certified this spectacular $5 die trial...
Interesting World Errors
A collection of mint errors from around the world...
MISSTRUCK UNITED STATES GOLD COINS
Compiled by Dennis O'Reilly, March 2006...
2001-S Proof Rhode Island Quarter Double Struck in Silver
To date, this is the only known proof State Quarter that is double struck and in Silver...
1965 Kennedy Half Dollar Unique Double Struck Mated Pair
A dramatic and wild mint error pair...
The Bolt Collection
It is incredible to see how inexpensive these mint errors were priced at over 30 years ago...
Mint Tour Photos
From a recent Mint tour...
1812 Cap Bust Half No Edge Lettering
It is one of only six known plain edge Bust Half Dollars in the entire series...
1996 Turkish Gold 25 Kurush Full Reverse Brockage
Brockages on world gold coins are rare...
1875 3¢ Nickel Struck Fragment
Major mint errors in the 3¢ Nickel series are very rare...
1859 Pattern Longacre's Liberty Head Uniface Die Trial
This is one of three known uniface die trials by Longacre to create the 1859 U.S. Half Dollar pattern...
Extremely Rare 1937 Great Britain Half Pence Edward VIII Uniface Die Trial
This die trial striking is of great numismatic importance and rarity...
1969-S Proof Roosevelt Dime Struck Clad Layer
This is the first struck clad layer on any U.S. denomination struck in proof...
1965 Jefferson Nickel Special Mint Set Struck 5% Off-Center
Major mint errors from Special Mint Sets are very rare...
1873 Seated Dime w/Arrows Struck 12% Off-Center
All major mint errors in the Seated Dime series are rare...
1921 Morgan Dollar with an Adjustment Strike and a Misaligned Obverse Die
Significant Morgan Dollar errors are rarely encountered...
PCGS Certifies 1869 3¢ Proof Silver Pattern In Aluminum With A Double Struck Obverse
All proof errors are very rare as well as all U.S. Pattern errors...
Off-Metals Struck At The San Francisco Mint
From a collection that was auctioned by the State of California...
1989-D Lincoln Cent Struck on Bronze Planchet
There are three known transitionals of this type...
1990-D Lincoln Cent Struck on Bronze Planchet
It should be on a copper-zinc blank planchet...
1974-D Ike Dollar Struck on 40% Silver-Clad Planchet
This TRANSITIONAL is from the Denver Mint...
1944-P Jefferson Wartime Nickel Transitional Mint Error
Struck on a copper-nickel planchet...
Silver Dollar Errors
Silver Dollar errors such as these are quite scarce and extremely valuable...
1952 Lincoln Cent Double Denomination on Struck Dime
One of the earliest dated Lincoln Cent double denominations...
1912 $2½ Indian Gold Struck 10% Off-Center
Gold mint errors are rare if they are struck more than 5% off-center...
Copper Ingot - From the Fred Weinberg Collection -
This ingot would have been melted, refined and eventually rolled into copper planchet strips...
Ethiopia Werk Muled With KM-18 Reverse
This is only the second gold mule that I've ever heard of...
Mercury Dime Double Struck 2nd Strike 25% Off-Center
This is a very dramatic double struck Mercury Dime...
1794 Franklin Token Incomplete & Curved Clips
All Major Mint Errors on Colonial Coins are scarce...
America's first Double Denomination
An Oak Tree Sixpence struck over an Oak Tree Shilling...
1886 Broadstruck Gold Dollar
Such errors are highly unusual for anything struck in gold...
U.S. Coins - Weights & Specifications
Click to view this informative chart...
1877 Seated Quarter Die Trial Adjustment Strike
All die trials for US TYPE coins are extremely rare...
AD 582-602 Byzantine Gold Justin II Full Brockage
Full brockages on ancient gold coins are extremely rare...
Lincoln Cent Struck on Bow-Tie Dime Scrap
Bow-tie errors are very scarce, but to have an off-metal bow-tie error is unbelievable...
1875 CA Gold Fractional 25¢ Uniface Reverse
All major mint errors on U.S. Gold coins are extremely rare...
1873 Octagonal 25¢ BG-793 CA Gold Fractional Rarity-5 Indian Head Full Obverse Brockage
An incredibly rare obverse brockage of BG-793...
A Partial Brockage, Double Struck, Partial Collar Bust Dime with UNITED STATES spelled UNIAMERIATES
This is a very unusual 1835 bust dime...
Canadian Mint Error
This is an incredible and unique Canadian mint error...
1923-S Peace Dollar Die Trial Struck 5% Off-Center
This is a spectacular Peace Dollar major mint error...
Ike Dollar Struck on a Dime Planchet
It is estimated that there are only six to eight known Ike Dollars struck on clad Dime blanks...
Spectacular Double Struck Clark Gruber $20 Gold
Clark Gruber was the most respected and well known financial and banking company...
Spectacular 1864 2¢ Obverse Die Cap With 2 Obverse Brockages
Major mint errors in the 2¢ series are very rare...
Unique U.S. Territorial Gold Error
The Bechtlers were the first large-scale Private Gold Coiners...
1853 $1 U.S. Gold Type 1 Broadstruck and Partial Collar
This is the only known broadstruck Type 1 $1 Gold Piece...
Rare Pattern Mint Errors
A selection of rare pattern mint errors...
Double Struck 1838 Half Dollar Pattern
There are fewer than 2 dozen confirmed errors over the course of the entire pattern series...
Unique Obverse Die Cap
Major mint errors in the Seated Half Dollar series are extremely rare...
1942 Walking Liberty Half Dollar Struck On A Silver Quarter Planchet
There are only a handful of off-metal Walking Liberty Half Dollars known...
Unique 1981 Dime Cap Overstruck on a 1981 Cent Cap
This Lincoln Cent was a deep obverse cap that struck many Lincoln Cents...
Barber Half Full Obverse Brockage
This is one of the most spectacular major mint errors...
Buffalo Nickels on Cent Planchets
I have listed the examples known to me of Shield nickels on cent planchets...
1918-S Standing Liberty Quarter Struck 13% Off-Center
All Major Errors on Standing Liberty Quarters are extremely rare...
1898 Barber Quarter Obverse Die Cap & Brockage
This is the only known obverse die cap in the Barber Quarter Series...
Draped Bust Dollar Struck 15% Off-Center
This Draped Bust Dollar mint error is well known in the numismatic community...
Pair of Barber Dime Die Caps
This is a unique pair of Barber Dime Die Caps...
1795 Flowing Hair Dollar Struck on Flawed Planchet
It was struck on a planchet with major flaws on both sides...
1855 Large Cent Obverse Die Cap
There are only a handful of Large Cent caps known...
Double Struck 1797 Draped Bust Large Cent
Draped Bust Large Cents are rare in MS 65...
Spectacular Buffalo Nickel Off-Center on Cent Planchet
Multiple errors on type coins such as the Buffalo Nickel are unheard of...
Double Struck 1924 Standing Liberty Quarter
It is very rare to find any major mint errors in the Standing Liberty Quarter series...
Unique Morgan Dollar Struck 20% O/C & Brockage Reverse
This is a spectacular major mint error in the Morgan Dollar series...
Two Headed Muling
This two-headed muling, a business striking - not a proof, was recently rediscovered...
U.S. Half Cents: An Undiscovered and Unloved Series
If you want a series to collect that won't break the bank...
(1943) Denver Quarter Struck on U.S. Steel Cent Planchet
There are only a few known Washington Quarters struck on U.S. Steel Cent Planchets...
Two Dramatic Indian Cent Errors
Most mint errors that are double struck are found with the second strike off-center...
1874 $1 U.S. Gold Type 3 Broadstruck
This is the only known broadstruck Type 3 $1 Gold Piece...
1909 Indian Head Cent Struck on Silver Dime Blank
This is a spectacular Indian Head Cent struck on a silver Dime blank intended for a Barber Dime...
1873 Shield Nickel Struck on Cent Planchet
All major mint errors in the Shield Nickel series are very rare...
1964 Kennedy Half Dollar Struck on Clad Quarter Planchet
This 1964 Kennedy Half is a rare TRANSITIONAL off-metal with only a few known...
2000-P "Mule" Sacagawea Dollar Reverse With States Quarter Obverse
There are now ten (10) confirmed specimens of the Sacagawea Dollar/Quarter Mule...
1898 Barber Quarter Obverse Die Cap & Brockage
This is the only known obverse die cap in the Barber Quarter Series...
A Two Country Double Denomination
This is one of two known Large Cents overstruck on coins from other countries...
Indian Cents on Dime Planchets
Indian Cents struck on silver dime planchets were often offered as patterns in early, circa 1900, auction sales...
Two Interesting Indian Cent Errors
I'd like to share these two major mint errors from my collection of Indian Cents...
Rare Double Struck Liberty Seated Dime
Double struck Liberty Seated Dimes are very rare...
1880-S Morgan Dollar Struck 40% Off-Center
Many consider this off-center Morgan to be the finest known example for the series...
Spectacular Off-Center French Gold LD'OR
This is a spectacular Major Mint Error on a 300 year old gold coin...
Unique Overstruck French Gold LD'OR
This is a unique 1701-C ½ LD'OR struck off-center on a 1694 ½ LD'OR...
Unique Pattern Capped Die
All major mint errors on proof patterns are very rare...
Double Struck Proof Pattern
All proof errors are very rare as well as all US Pattern errors...
Spectacular Proof Gold Mule
This is one of the most spectacular mint error mules of all time...
Unique German Die Trials
This is a UNIQUE Die Trial set of four different German denominations...
1859 Indian Head Cent Obverse Struck on an 1857 Seated Half Dime
This is one of the most dramatic and unique major mint errors ever discovered...
1853 U.S. Assay $20 Gold Piece Certified as Double Struck by NGC
All Major Mint Errors on U.S. Gold Coins are extremely rare...
Fred Weinberg's Off-Center $20 Liberty
This spectacular $20 Liberty Gold Piece is the farthest known off-center...
A Unique 1877 $50 Reverse Hub Trial in Lead
There are only 272 Splashers known and only 43 Hub Trials known for the entire U.S. Pattern series...
Shield Nickels on Cents
Shield nickels on cent planchets have often been mistaken for regular die trial pieces...
Unique Origami Error
The term "origami" derives from the Japanese language for the art of paper folding...
1974 Aluminum Cent
In the early-mid 1970's my grandfather ran a small pawn shop in Mississippi...
All on One Colonial Copper
A Double Struck New Jersey, a Connecticut Undertype and a Brockage British Halfpenny...
1867 5¢ Obverse Hub Trial Struck in Copper
Why produce an aluminum five-cent pattern?...
Unique 1860 $5 Reverse Hub Trial Struck in Copper
Why a $5 pattern in 1860? According to Judd, in 1860 the U.S. Treasury discovered that...
Highlights From My Collection of Swedish Error Coins
This is a journey through my Swedish collection of error coins...
Errors From The Royal Mint
The Royal Mint of the United Kingdom has the reputation as being one of the tightest "quality controlled" mints in the entire world...
Matched Brockage Pairs
Collectors of brockages know that all brockages are scarce...
1901/0-S $5 Liberty Gold Struck 10% Off-Center
This piece is one of the most spectacular gold errors ever discovered...
Double Struck Swedish Gold Coin
An 1884 20 Kroner gold coin that is double struck...
1862 Indian Cent Obverse Die Cap
This is one of the most spectacular and dramatic die caps known...
1944 Steel Cent
There is confusion whether some of the planchets designated for...
Eight Reales with Four Error Features
These four error features are then as follows: off-center, flip-over, double-strike and partial brockage...
1846 PROOF $2½ Overstruck by 1846 PROOF $5
This spectacular Pattern Die Trial is also a Major Mint Error...
Unique Double Denom Error Note
Although there are double denominations known, this is the only one reported where...
An 1803/2 $5 Gold Piece with an Off-Center Obverse
It is very rare for any U. S. gold coin to be also a mint error...
Off-Metal Walkers
One of these coins is very rare, but to have two of them was amazing...
Thrill of the Hunt
It sure is fun collecting error coins since they are so different and sometimes even unique...
Highlights From My World Error Collection
For many years I have been interested in building up a collection of world error coins...
Double Struck French 5 Francs on Spoon!!
This is one of the most outrageous, exotic, dramatic and unique mint errors that I have ever encountered in 25 years...
Triple Struck Double Denom Rev Brockage Off Metal or Triple Denom?...
The slab label is too small for a full description of this fabulous error...
1963 Half Crown Struck on a Half Penny Copper Planchet
A very rare off metal from Great Britain...
The Amazing Broken CC and Other Errors on Display
This coin is the most dramatic error ever heard of on a Morgan Dollar...
Learning About Minting from an Errant Elephant
What can we learn from this off-center piece?
A Fascinating 1790 Mule
It has an estimated mintage of five pieces struck and is the first one we've ever seen of this type...
The Only Complete Set of 1999 State Quarters Struck on Exp Plan
There are approx. 15 known 1999 State Quarters struck on Exp Planchets...
1916 Mexico Gold 60 Pesos Oaxaca Overstruck on an Earlier 8 Escudos Hand on Book Type
A fascinating and dramatic numismatic rarity...
2000 Cent Flipover Strike
It's a very appealing error to look at...
1999 SBA Dollar Struck on a Struck Georgia Quarter
This is only one of two known obverse SBA caps...
The Story Behind An Interesting Overstrike Coin
The coin that illustrates this story is a 1951 Norwegian 1 Kronor struck on a 1946 Swedish 1 Kronor...
