A numerical coin grade is a shorthand for condition, not a complete description of the coin. Most U.S. numismatic grading uses the 1–70 Sheldon scale. On a third-party holder, the number should be read alongside the coin’s date, mintmark, variety, strike type, and any added designation.
Circulated grades and Mint State are different questions
For circulated coins, graders look principally at how much original design detail survives and where wear appears. Common landmarks include Good (G), Fine (F), Very Fine (VF), Extremely Fine (XF), and About Uncirculated (AU). A coin at AU58 may have attractive luster but show slight wear on a high point. It is not simply an MS60 with a different sticker.
Mint State covers grades MS60 through MS70. All fall within the uncirculated category, but a technically uncirculated coin may still have distracting marks, weaker luster, or a less pleasing strike. MS65 does not mean “65% perfect,” and grading standards are not a mechanical equation.
Four things to inspect on a Mint State coin
- Strike: how completely the dies transferred the intended design.
- Luster: the way light rolls across original mint surfaces.
- Surface preservation: bag marks, contact marks, hairlines, and other flaws.
- Eye appeal: the overall visual impact, including attractive or unattractive toning.
These four considerations are recognized in PCGS grading guidance. On classic issues, a weak strike and actual wear can be easy to confuse in flat photographs, so inspect both sides under consistent lighting.
Read the whole label
“MS64” differs from “PR64,” because proof is a method of manufacture rather than a synonym for perfect. A “Details” qualifier can also materially affect comparability. Record the date, mintmark, denomination, numeric grade, service, and any suffix before using price guides or sold records.
The collector’s rule
Buy the coin and the evidence, not just the number. Two coins in the same grade may look quite different, and market prices can reflect toning, originality, pedigree, variety, and demand. Use the grade to narrow your research rather than end it.