Category Archives: removed mint marks

Counterfeit Coin Detection – 1891 Double Eagle US Gold Coin

Counterfeit 1891 Double Eagle By Max Spiegel –  Numismatic Guaranty Corporation…. NGC graders identified an 1891-S Double Eagle with a removed mintmark. Because most alterations involve added, not removed, mintmarks, this coin might easily fool unsuspecting collectors. The California Gold Rush created an immediate need for a mint to turn the recovered gold dust and […]

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