Start with the Sheldon 1–70 scale
American numismatics grades coins on a 70-point scale, where 1 is a barely identifiable slick and 70 is a flawless coin under 5x magnification. Grades from 1 to 58 describe circulated coins with progressively less wear, while 60 to 70 covers Mint State (uncirculated) coins ranked by luster, strike, and surface marks.
You do not need to pin down an exact number at first. Learn to place a coin in the right tier — Good, Fine, Very Fine, Extremely Fine, About Uncirculated, or Mint State — and refine from there. Most of a coin’s value story is told by which tier it lands in.
- G-4 to G-6: heavily worn, major design visible in outline
- F-12 to F-15: moderate even wear, all lettering readable
- VF-20 to VF-35: light to moderate wear on high points only
- EF/XF-40 to 45: slight wear on the highest points, traces of luster
- AU-50 to AU-58: trace wear, most luster intact
- MS-60 to MS-70: no wear at all, graded on marks, luster, and strike
Know where wear shows first
Every design has predictable high points that wear before anything else. On a Lincoln cent, check the cheekbone and jaw; on a Jefferson nickel, the hair above the ear and the steps of Monticello; on a Morgan dollar, the hair above Liberty’s ear and the eagle’s breast feathers.
Train your eye by comparing the highest points against protected areas like the fields near the rim. If the high points show a different, duller sheen than the protected areas, the coin has wear and cannot be Mint State — no matter how shiny it looks overall.
A simple grading workflow
Consistency beats talent in grading. Use the same light, the same magnification, and the same sequence every time, and your estimates will converge on what professional graders assign.
- Use a single incandescent or LED lamp and a 5x loupe
- Tilt and rotate the coin under the light to reveal luster breaks
- Check the high points of the design first, then the fields
- Look for hairlines from cleaning — they change everything
- Compare against published grading photos for the same series
- Write your grade down before checking any reference, then compare
Grade your coins with CoinVault Pro
CoinVault Pro gives you a second opinion in seconds: snap a photo and the app’s AI recognition identifies the coin and returns a Sheldon-scale grade estimate from 1 to 70, along with live market values built from Numista catalog data and real eBay sold prices.
It is a fast way to pre-screen a box of coins before deciding which ones deserve a closer look or a professional grading fee. The app is free to download, so you can start practicing on your pocket change today.