U.S. Mint Error Coins for Sale: Proof
U.S. Proof error coins are very rare due to the stringent standards set for proof coins.
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| 1983 S 1MM OO1P Proof Lincoln Cent RPM | ![]() |
0 Bid | US $9.99 | 8h 57m |
| 1964 PROOF KENNEDY HALF ACCENTED HAIR PCGS PR66 | ![]() |
3 Bids | US $30.72 | 12h 8m |
| 1971S PROOF LINCOLN CENT WITH ERROR | ![]() |
0 Bid | US $.01 | 1d 9h 25m |
| 1964 PROOF KENNEDY HALF DOLLAR ROSE TONE DDO DDR ERROR | ![]() |
1 Bid | US $.01 | 1d 10h 26m |
| Jamestown 400th anniversary silver proof ERROR | ![]() |
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US $449.00 | 1d 11h 9m |
| 1999 S Lincoln Cent CLOSE AM ERROR Proof 68 PCGS PR68RD | ![]() |
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US $324.95 | 1d 20h 1m |



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