Coin Grading Guide
A coin's grade can materially affect how collectors evaluate it. Here's how graded US coins are described, what the abbreviations mean, and how to compare the major services without treating a holder as a substitute for verification.
The Sheldon Scale (1-70)
Modern grading runs on the 70-point Sheldon scale, introduced for large cents in 1949 and now used for every US series. 1 is barely identifiable; 70 is perfection. The leap from circulated wear to Mint State is where prices accelerate sharply.
| Grade band | Range | What it means |
|---|---|---|
| Mint State (MS) | MS-60 to MS-70 | Uncirculated, never spent. MS-70 is flawless under 5× magnification. |
| Proof (PR / PF) | PR-60 to PR-70 | Specially struck for collectors, mirror fields. A strike type, not a quality tier. |
| About Uncirculated (AU) | AU-50 to AU-58 | A trace of wear on the highest points; near-mint eye appeal. |
| Extremely Fine (XF/EF) | XF-40 to XF-45 | Light, even wear; all major detail still sharp. |
| Very Fine (VF) | VF-20 to VF-35 | Moderate wear across the design, still pleasant. |
| Fine → Good (F-G) | G-4 to F-15 | Heavy circulation; rims and major devices remain. |
Strike vs. grade
MS (Mint State) and PR/PF (Proof) describe how a coin was struck, not how good it is. A business-strike coin is graded MS; a coin struck on polished dies for collectors is graded PR or PF. Both then carry a 60-70 quality number.
Strike & color designations
- RD / RB / BN: copper color: Red, Red-Brown, Brown. Full Red commands large premiums.
- FB / FBL / FH / FS: full-strike designations (Full Bands, Full Bell Lines, Full Head, Full Steps) that reward a complete strike.
- ★ (Star) / +: NGC's Star and PCGS/NGC's plus mark exceptional eye appeal within a grade.
- CAC: an independent sticker verifying a coin is solid-to-premium for its grade; CAC-approved coins trade higher.
PCGS vs. NGC vs. ANACS
PCGS, NGC, and ANACS each publish certification, verification, service, and guarantee information. Terms and market acceptance can vary by coin and transaction. Population reports can provide context, but they are not survival estimates and should not be used alone to determine rarity or value. Full comparison →
Why the slab matters
A third-party opinion and holder can reduce uncertainty, but neither eliminates authenticity, alteration, grading, holder, or transaction risk. Verify the certification record and any available grader images, inspect the coin and holder, review the seller and return terms, and read the applicable guarantee. Compare that process with buying the same coin raw.
Grade it yourself first
Before you trust any listing, learn to read a coin. A good loupe and the Red Book are the cheapest upgrade a collector makes, see our collector gear picks. Then put it to use: browse graded coins and see where to buy.
Frequently asked questions
What does MS-65 mean?
MS-65 (“Gem Uncirculated”) is a mint-state grade on the 70-point Sheldon scale: a coin with strong luster and only minor marks outside the focal areas. It’s the classic collector target for most series.
What is the Sheldon scale?
The 70-point scale used to grade US coins, from 1 (barely identifiable) to 70 (flawless). Circulated grades run from G-4 up to AU-58; mint state is MS-60 to MS-70.
What’s the difference between PCGS, NGC, and ANACS?
Each service publishes its own eligibility, fee, turnaround, verification, and guarantee terms. Compare those current terms with the needs of the particular coin rather than relying on a universal ranking.
Why can one grade change a coin’s value so much?
Demand and the number of surviving examples can vary sharply between adjacent grade bands. Verify current population and transaction records for the exact coin, grade, designation, and holder before drawing a value conclusion.