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| Sub-Mariner #30 | ||
| Marvel Comics, 10/70 | ||
| Roy Thomas story | Captain Marvel and Rick Jones | |
| Sal Buscema and Mike Esposito | appearance. | |
| cover and 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 | 120 | 8.53 | 0 0.00% | 0 0.00% | 12 10.0% | 19 25.8% | 15 38.3% | 17 53% | 8 59% | 18 74% | 5 78% | 9 86% | 3 88% | 4 92% | 3 94% | 0 94% | 2 96% | 1 97% | 1 98% | 2 99% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Restored | 3 | 9.53 | 0 0.00% | 0 0.00% | 0 0.0% | 2 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% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Signature | 2 | 8.50 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 2 100% | 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 #30 (1970, Marvel Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 10% 12 9.8 | 16% 19 9.6 | 13% 15 9.4 | 14% 17 9.2 | 7% 8 9.0 | 15% 18 8.5 | 4% 5 8.0 | 8% 9 7.5 | 3% 3 7.0 | 3% 4 6.5 | 3% 3 6.0 | 0% 0 5.5 | 2% 2 5.0 | 1% 1 4.5 | 1% 1 4.0 | 2% 2 3.5 | 1% 1 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 | ||||||||||||||||||||||||