If you've ever seen a coin described as “AU-55” or “MS-63” and wondered what it meant, you're not alone. Grading is simply a standardized way of describing a coin's condition—and it has a big impact on value.
The Sheldon Scale
Modern grading uses a 1–70 scale. In short:
- Good (G-4 to G-6): heavily worn but identifiable.
- Fine / Very Fine (F-12 to VF-30): moderate wear, clear detail.
- Extremely Fine (XF-40 to XF-45): light wear on the highest points.
- About Uncirculated (AU-50 to AU-58): just a trace of wear.
- Mint State (MS-60 to MS-70): no wear at all—never circulated.
Circulated vs. uncirculated
A circulated coin has spent time in everyday use and shows wear. An uncirculated (Mint State) coin was never used and retains its original luster. Even small differences in grade can mean large differences in price, especially for scarce dates.
Should you buy certified coins?
Coins graded and sealed by services like ICCS, PCGS, or NGC offer peace of mind on authenticity and grade. For lower-value coins, a trusted seller's honest description is often enough.
When in doubt, ask questions—a good dealer is always happy to explain a grade.
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