This is an exciting and fascinating new discovery. An unknown type of error until this discovery piece. It was first spotted in circulation by a woman sorting through her states quarters looking for errors. It has changed hands several times and finally found it's way to ANACS for certification. ANACS authenticated, certified, and graded it MS 64. It is a dual date (two different years, and also two different centuries, 2000/1999). It is also a dual state (Massachusetts and Georgia).