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.
How we build and check this calculator
This calculator runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
SuperGlobalCalculator is independently built and maintained. See how we build and verify our calculators.