The Sheldon Coin Grading Scale is a 70 point scale used in the numismatic assessment of a coins quality. It is used by nearly all major coin grading companies, the main two being NGC and PCGS.

The grades for the scale are as follows:

Blank Poor Fair AG G VG F VF XF AU MS Proof
0 1 2 3 4-6 8-10 12-15 20-35 40-45 50-58 60-70 60-70

Acronyms Explained:

AG – About Good

G – Good

VG – Very Good

F – Fine

VF – Very Fine

XF – Extra Fine

AU – About Uncirculated / Almost Unirculated

MS – Mint State

The scale was invented by William Herbert Sheldon.

William Herbert Sheldon, Jr. (November 19, 1898 – September 17, 1977) was a American psychologist and numismatist. He created the field of somatotype and constitutional psychology that tried to correlate body types with behavior, intelligence and social hierarchy through his Ivy League nude posture photos.  However, his work is generally dismissed by modern researchers.