Coin Database

Use this research hub to browse United States error coins and die varieties by denomination, date, mint mark, and diagnostic feature.

How to research a coin

Start with the date and mint mark, record the denomination and weight, then compare clear photographs with documented references.

New entries and detailed variety pages will be organized here as the database grows.

Have a coin to show off? Log in or create a free account to add it to the Coin Database and your profile.

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