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| Sub-Mariner Comics #40 | ||
| Atlas Comics, 6/55 | ||
| Bill Everett story, cover and art | Namora and Byrrah appearance. | |
| Tony DiPreta art | ||
| 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 | 70 | 5.40 | 0 0.00% | 0 0.00% | 0 0.0% | 1 1.4% | 2 4.3% | 1 5.7% | 5 12.9% | 5 20.0% | 4 25.7% | 3 30.0% | 5 37.1% | 3 41.4% | 3 45.7% | 1 47.1% | 4 53% | 5 60% | 6 69% | 5 76% | 5 83% | 2 86% | 5 93% | 2 96% | 0 96% | 2 99% | 1 100% |
| 1 BOOK | Restored | 4 | 4.88 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 25.0% | 1 50% | 0 50% | 0 50% | 0 50% | 0 50% | 0 50% | 1 75% | 0 75% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| Sub-Mariner Comics #40 (1955, Atlas Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 0% 0 9.8 | 1% 1 9.6 | 3% 2 9.4 | 1% 1 9.2 | 7% 5 9.0 | 7% 5 8.5 | 6% 4 8.0 | 4% 3 7.5 | 7% 5 7.0 | 4% 3 6.5 | 4% 3 6.0 | 1% 1 5.5 | 6% 4 5.0 | 7% 5 4.5 | 9% 6 4.0 | 7% 5 3.5 | 7% 5 3.0 | 3% 2 2.5 | 7% 5 2.0 | 3% 2 1.8 | 0% 0 1.5 | 3% 2 1.0 | 1% 1 0.5 |
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||