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| Sub-Mariner #56 | ||
| Marvel Comics, 12/72 | ||
| Dan Adkins and Mike Friedrich story | ||
| Dan Adkins art | ||
| Alan Weiss cover | ||
| Books | CGC Label | CGC Total | Avg. Grade | 10 | 9.9 | 9.8 | 9.6 | 9.4 | 9.2 | 9.0 | 8.5 | 8.0 | 7.5 | 7.0 | 6.5 | 6.0 | 5.5 | 5.0 | 4.5 | 4.0 | 3.5 | 3.0 | 2.5 | 2.0 | 1.8 | 1.5 | 1.0 | 0.5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 BOOK | Universal | 139 | 9.01 | 0 0.00% | 0 0.00% | 18 12.9% | 31 35.3% | 31 58% | 14 68% | 14 78% | 10 85% | 8 91% | 3 93% | 2 94% | 3 96% | 1 97% | 3 99% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Signature | 3 | 9.03 | 0 0.00% | 0 0.00% | 0 0.0% | 1 33.3% | 0 33.3% | 0 33.3% | 1 67% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Qualified | 1 | 9.40 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| Sub-Mariner #56 (1972, Marvel Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 13% 18 9.8 | 22% 31 9.6 | 22% 31 9.4 | 10% 14 9.2 | 10% 14 9.0 | 7% 10 8.5 | 6% 8 8.0 | 2% 3 7.5 | 1% 2 7.0 | 2% 3 6.5 | 1% 1 6.0 | 2% 3 5.5 | 1% 1 5.0 | 0% 0 4.5 | 0% 0 4.0 | 0% 0 3.5 | 0% 0 3.0 | 0% 0 2.5 | 0% 0 2.0 | 0% 0 1.8 | 0% 0 1.5 | 0% 0 1.0 | 0% 0 0.5 |
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||