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USA. Proof 1 Dollar 2010 S, San Francisco, 16th President Abraham Lincoln - PCGS PR 69 DCAM, KM 478, copper plated with manganese brass (77% copper, 12% zinc, 1% other on pure copper core), 26,50 mm, weight 8,10 g., Designer: Don Everhart, Condition PCGS PR 69 DCAM, special dedicated PCGS label