Double die

**Double die**

A “Double die” refers to a specific type of minting error found on coins where the design is struck more than once, resulting in overlapping or doubled images, letters, or numbers. This occurs during the coin production process when the die used to imprint the design shifts slightly between strikes. Collectors often seek out double die coins for their unique appearance and rarity, which can sometimes increase their value. In numismatics, the term highlights the importance of precision in coin manufacturing and the fascinating variations that errors can create.