About MintMark

Coin collecting is one of the oldest hobbies in the world — but getting started can feel intimidating. Catalog numbers, grading scales, auction jargon… all you wanted to know was “what's this coin I found?”

MintMark starts there. Photograph any U.S. coin, learn its story in plain English, and discover the errors and varieties that turn pocket change into treasure. No account. No fees. No pressure.

A few promises we make:

• Honest values. We show realistic ranges, not clickbait. Most coins are worth face value — and we'll tell you that too.
• Real varieties only. Every variety in our database is documented by the collecting community (PCGS, NGC, CONECA attributions). We don't invent treasure.
• Your data is yours. Your collection is stored on your device, never on our servers.

Happy hunting. 🪙