This is a fascinating numismatic discovery and the first set in private hands from any mint from around the world. It is a two piece set, which the Malaysia mint used for the edge lettering on the 50 Sen coin.

The 1971 Malaysia 50 Sen has a composition of copper nickel (75% copper, 25% nickel), weighs 7.3 grams with a diameter of 27.8 mm.

This edge lettering block set was discovered in Malaysia in an old time collection of mint errors and dies. In addition to this edge lettering block set, there were obverse and reverse dies, feeder fingers, mules, and striking errors.

The edge letter rimming block is the edge die that created the incuse edge lettering on the 50 Sen. The words BANK NEGARA MALAYSIA are raised inside the channel on the rimming block, and as coins are sent through the channel, incuse lettering is pressed into each edge of each coin.

The edge lettering rimming block is in excellent condition and is free of any rust or damage. It has a height of 40 mm, a width of 54.9 mm and a length of 101.6 mm. It weighs approximately 3.9 pounds and is solid steel.

The second piece in the set is the actual edge lettering tool that created the incuse edge lettering in the channel of the edge lettering rimming block. It has the raised edge lettering BANK NEGARA MALAYSIA around its circumference.

Edge lettering on coins started to make headline news in 2007 when thousands of the U.S. series of Presidential dollars were struck without the edge lettering.

This edge lettering block set belongs in an advanced collection of mint errors or along with a group of coin dies or mint equipment. It is unique to date. This is an incredible numismatic discovery.

Here is the edge lettering on a Malaysia 1977 50 Sen: