Research-first · sourced · accessible

Learn to grade U.S. coins, accurately and responsibly

A calm, beginner-friendly guide to United States coin grading, built the slow, honest way. Every factual claim is checked against trusted sources, and anything we cannot verify is marked, never presented as fact.

1879-S Morgan dollar, graded NGC MS67+. Photo: Brandon Grossardt, CC BY-SA 3.0.

Our promise: we never invent grades, standards, values, or history. We research every claim against trusted sources like PCGS, NGC, the U.S. Mint, and the ANA, and cite them on every page.

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Lessons

Step-by-step: grading basics, a hands-on workflow, how coins are made, errors and varieties, counterfeit detection, conservation, and how to submit coins for grading.

Coin Type Guides

Per-series grading guides with real photos: high points, weak-strike areas, common problems, and counterfeit risks.

Glossary

A searchable dictionary of grading terms, in plain English with beginner and advanced explanations.

Sources & Credits

Who we trust and why, and image licenses for every photo on the site.

Explore coins by denomination

From cents to dollars and gold, every major U.S. design, catalogued. Pick a denomination to browse its types and grading guides.

Featured grading guides

Series with full, photo-illustrated grading guides ready now.

Frequently asked questions

What is coin grading?

Grading rates a coin's condition on a shared 1-to-70 scale so collectors everywhere mean the same thing by a grade. After rarity, condition is the biggest driver of a coin's value.

Should I clean my coins?

In most cases, no. Cleaning usually lowers value, and detectably cleaned coins receive a “Details” grade. We treat cleaning carefully and never as casual advice.

How do I get a coin professionally graded?

You submit it to a third-party grading service like PCGS or NGC, directly with a membership or through an authorized dealer, and it comes back authenticated, graded, and sealed in a labeled holder. Our lesson on submitting coins for grading walks through the whole process, from deciding whether it is worth it to packing the box.