Cleaned Copper Coins May Be Challenging to Detect - CoinWeek
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Cleaned Copper Coins May Be Challenging to Detect CoinWeek Since this Lincoln was still the sharpest one in my collection (being even more detailed than my matte proofs of 1910 and 1913), I had a dealer submit it to NGC with some other coins of his own, knowing full well the outcome. The graders indeed pegged ... |