Methodology
HOF Grading Scale
A clear 1–10 score built from four equally weighted visible-condition categories.
Four equal subgrades
Centering25%
Corners25%
Edges25%
Surface25%
The scoring engine can be revised independently as calibration evidence improves.
9.5–10
Gem caliber
Exceptionally strong visible condition
9.0
Mint caliber
Minor visible issue tolerance
8.0–8.5
Near mint–mint
Several minor or one moderate issue
7.0–7.5
Near mint
Visible handling or production issues
1.0–6.5
Collector grade
Material visible condition concerns
Important: HOF Score is an independent pre-grading estimate, not a guarantee of the grade assigned by any professional grading company.