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Doubled die (also known as hub doubling) is a term in numismatics used to refer to a duplication of design elements on a working die created due to a misalignment of the die or hub during the hubbing process. Strength of the doubling can vary from very slight and isolated to extreme and widespread. The exact cause of the doubling can also vary, which is why a class system was created to outline the known and hypothesized causes.
Doubled die varieties, when noticeable to the naked eye or occur in a popular coin series, are extremely popular with collectors and can be worth a large premium over the same coin without the doubling. The most popular doubled die variety would be the 1955 US cent doubled die[1] which typically sells for over $1000 at auction.[2]
This term is commonly misspelled "double die."
- ^ "1955 DDO Lincoln Cent Sells for $124k at GreatCollections.com". CoinWeek.com. CoinWeek. 3 March 2020. Archived from the original on 23 September 2020. Retrieved 9 September 2020.
- ^ "1955 1C DDO FS-101 (021.8), BN (Regular Strike) Lincoln Cent (Wheat Reverse) - PCGS CoinFacts". Archived from the original on 2021-01-23. Retrieved 2024-01-07.
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