Read from CGC Cards’ grading scale page. Checked 2026-09-20. Official page.
“For sports and non-sports cards, centering must be 60/40 or better for the front of the card, and 90/10 for the back.”
Ratios that reach Mint 9 but not the grade above, on the front line alone: 57/43 · 58/42 · 60/40.
| Grade | Front | Back |
|---|---|---|
| Pristine 10 | 50/50 | — |
| Gem Mint 10 | ~55/45 | 75/25 |
| Mint+ 9.5 | — | — |
| Mint 9 | 60/40 | 90/10 |
| NM/Mint+ 8.5 | — | — |
| NM/Mint 8 | 65/35 | — |
| Near Mint+ 7.5 | 65/35 | — |
| Near Mint 7 | 70/30 | — |
| Ex/NM+ 6.5 | — | — |
| Ex/NM 6 | 75/25 | — |
| Excellent+ 5.5 | — | — |
| Excellent 5 | — | — |
| VG/Ex+ 4.5 | 85/15 | — |
| VG/Ex 4 | — | — |
| Very Good+ 3.5 | 90/10 | — |
| Very Good 3 | — | — |
| Good 2 | — | — |
| Fair 1.5 | — | — |
| Poor 1 | — | — |
Mint 9: 60/40 front, 90/10 back. As published: "For sports and non-sports cards, centering must be 60/40 or better for the front of the card, and 90/10 for the back."
CGC publishes no centering figure for Mint+ 9.5.
On the published front lines alone: 57/43, 58/42, 60/40 — better than the Mint 9 line but not the Mint+ 9.5 line. Corners, edges and surface can only hold or lower the grade.
Compare the two borders on each axis: a card whose left border is 57% of left plus right is 57/43. Services judge the worse axis, front and back separately. SlabbyPrep measures both from a photo to a hundredth of a millimetre.
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