Learn about varieties here at Rich Off Error Coins

Coin Varieties

Explore repeatable design differences created by the die, including doubled dies, repunched mint marks, overdates, large-date and small-date types, and documented die markers.

Featured variety research

1970-S Doubled Die Penny (DDO-001) Guide

Compare multiple diagnostics and trusted references. Machine doubling and circulation damage are not the same as a recognized doubled die variety.

Coin Varieties: What to Look For

Coin varieties are differences created by the dies used to strike coins. Two coins may have the same date and mintmark, but a closer look can reveal different lettering, spacing, or other details.

Browse the varieties below to learn where collectors look for those differences. Start with the date, mintmark, and coin type. Then compare the photos and descriptions of the identifying markers. Check more than one detail before deciding you have a match.

Share a Variety You Found

Think you found a coin variety? Send clear photos of both sides of the coin and close-ups of the details that caught your eye. Include the date, mintmark, denomination, and a description of what you see. Useful close-ups might show the AM in AMERICA, the ST in STATES, a mintmark, the date, or another unusual feature.

Collector submissions help us show what varieties look like on real coins. A possible match still needs careful review before it can be identified as a confirmed variety.

Explore the entries below, compare the details, and take a second look at the coins you already own.