Coin Grade Value Calculator
Estimate numismatic coin value from Poor-1 to MS-70 grade.
Shows how each step multiplies value for Lincoln cents, Morgan dollars, and Walking Liberty halves.
Coin value depends heavily on condition, measured by the Sheldon 1–70 grading scale. A one-grade difference can mean hundreds or thousands of dollars for scarce coins. This calculator estimates how a coin’s value changes across grades using typical market multipliers.
The Sheldon Grading Scale
| Grade | Code | Description |
|---|---|---|
| 1 | PO-1 | Poor, barely identifiable |
| 2–3 | FR-2 / AG-3 | Fair to About Good, heavy wear |
| 4–6 | G-4 / G-6 | Good, major design visible, flat details |
| 8–12 | VG-8 / VG-10 | Very Good, some detail in recessed areas |
| 15–20 | F-12 / F-15 / VF-20 | Fine to Very Fine, moderate wear on high points |
| 25–35 | VF-25 / VF-30 / VF-35 | Choice Very Fine, light wear on high points |
| 40–45 | EF-40 / EF-45 | Extremely Fine, slight wear on highest points only |
| 50–53 | AU-50 / AU-53 | About Uncirculated, trace wear on highest points |
| 55–58 | AU-55 / AU-58 | Choice AU, barely perceptible wear |
| 60–63 | MS-60 to MS-63 | Mint State, no wear but may have bag marks |
| 64–66 | MS-64 to MS-66 | Choice to Gem, few contact marks, good luster |
| 67–70 | MS-67 to MS-70 | Superb Gem to Perfect, virtually flawless |
Value Multiplier Formula
For common-date coins, the approximate value multiplier relative to a G-4 baseline is:
Multiplier ≈ Base × (1.15)^(grade_steps_above_G4)
This is exponential because demand rises sharply as condition improves. The curve steepens dramatically above MS-63.
Worked Example: 1921 Morgan Silver Dollar
G-4 value: approximately $30. VF-20 value: $30 × 1.5 = ~$45. EF-40 value: $30 × 2.5 = ~$75. AU-55 value: $30 × 5 = ~$150. MS-63 value: $30 × 12 = ~$360. MS-65 value: $30 × 50 = ~$1,500.
These are rough market estimates. Key dates, mint marks, toning, and eye appeal can shift values significantly. Always consult a current price guide (PCGS, NGC, or Red Book) for accurate pricing.
The MS-63 to MS-65 Jump
The biggest value jump for most US coins occurs between MS-63 and MS-65. At MS-63, bag marks and contact marks are acceptable. At MS-65, only minor marks are allowed, and the coin must have above-average luster and strike. Population reports show far fewer coins certified at MS-65 or above, driving prices sharply higher.
Third-Party Grading
Professional grading services (PCGS, NGC) encapsulate coins in tamper-evident holders (“slabs”) with a grade label. Slabbed coins typically sell for 10–30% more than raw coins of the same grade because buyers trust the attribution and authenticity.