Grade scale and equivalences

66, 67, 68, 69, 70 SuperGemUnc
63, 64, 65 Uncirculated (Unc)
60, 61, 62 Auncirculated (Aunc)
58 Extremely Fine Plus (XF+, EF+)
55 Extremely Fine (XF, EF)
52 Extremely Fine Minus (XF-, EF-)
45, 50 Very Fine (VF)
35, 40 Fine (F)
20, 25, 30 Very Good (VG)
10, 12, 15 Good (G)
4, 6, 8 Poor (P)