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Cents through Gold Dollars / Quarters / 1990-S Double Die Proof Quarter

1990 S Double Die “Proof” Quarter

Here is a trick question: Which coin has less than 20 examples of a mint error officially discovered, yet according to Mint records, 2000+ were said to be produced? Further compounding the mystery is that the coin is of a proof variety, specifically designed for collectors who examine such offering ... Read On