Original article by Mike Byers in MintErrorNews – Edited and Reformatted by CoinWeek Experimental coins often reveal hidden chapters of Mint history. Occasionally, one surfaces in the most unexpected place. In this case, the discovery occurred inside a routine bag of cents. A rare Martha Washington test piece struck around 1999–2000 provides an intriguing glimpse into metallurgical testing connected with the creation of the Sacagawea dollar. The…
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