Grading Scale
| Traditional Grade | Point Score |
| Superb Gem | 100 |
| Superb* | 99 |
| Superb | 98 |
| XF* | 96 |
| XF-Superb | 95 |
| Extremely Fine Plus | 92 |
| Extremely Fine (XF) | 90 |
| VF-XF | 85 |
| Very Fine (VF) | 80 |
| F-VF | 75 |
| Fine | 70 |
| VG-Fine Plus | 65 |
| VG-Fine | 60 |
| Not gradable below 60 | |
| VG* | 55 |
| Very Good (VG) | 50 |
| Good-Very Good | 40 |
| Good | 30 |
| Fair | 20 |
| Poor | 10 |