CoinErrors is an evolving prototype designed to refine structure, language,
and user experience. Content, layout, and features will continue to develop as the catalog expands

Error Types

Detailed categories to help identify common U.S. coin mint errors.

Die Errors
Close-up of a U.S. coin showing a clear die crack along the rim.
Close-up of a U.S. coin showing a clear die crack along the rim.

Flaws from damaged or misaligned dies causing cracks or missing details.

A coin displaying doubled lettering from a doubled die error.
A coin displaying doubled lettering from a doubled die error.
A coin with off-center strike showing part of the design cut off.
A coin with off-center strike showing part of the design cut off.
Strike Errors

Errors from improper striking like off-center or weak impressions.

Coins struck with misaligned or missing elements due to planchet issues.

Planchet Errors

Gallery

A visual guide to common U.S. coin mint errors.

Close-up of a doubled die penny showing clear doubling on the date and lettering.
Close-up of a doubled die penny showing clear doubling on the date and lettering.
A U.S. quarter with a noticeable off-center strike, highlighting the misalignment.
A U.S. quarter with a noticeable off-center strike, highlighting the misalignment.
An enlarged view of a coin with a die crack running through the design details.
An enlarged view of a coin with a die crack running through the design details.
A mint error coin featuring a clipped planchet with irregular edges visible.
A mint error coin featuring a clipped planchet with irregular edges visible.
Contact

Questions? Reach out for expert coin error help.

Email

This website serves as a working prototype and exploration environment.
It exists to refine structure, language, and user flow — not to provide a live service or operational platform

info@coinerrors.com

555-123-4567

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