1962 Lincoln Memorial Proof Penny Cent, DDO Mint Error • Doubled Die Obverse • Graded NGC PF66 RD (Red)

Professionally Graded Mint Error by NGC

A Double Die Obverse (often called a DDO) is a highly collectible error that occurs when a coin’s front die is struck multiple times with the hub during the manufacturing process, resulting in a distinct, overlapping "double" image on the face of the coin.