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| Showcase #30 | ||
| DC Comics, 1-2/61 | ||
| Jack Miller story | 1st Aquaman tryout issue. | |
| Ramona Fradon art | Origin of Aquaman. | |
| Howard Purcell and Sheldon Moldoff 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 | 823 | 4.94 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 4 0.5% | 10 1.7% | 10 2.9% | 23 5.7% | 37 10.2% | 31 14.0% | 52 20.3% | 64 28.1% | 59 35.2% | 54 41.8% | 78 51% | 79 61% | 72 70% | 69 78% | 59 85% | 45 91% | 30 94% | 16 96% | 15 98% | 9 99% | 7 100% |
| 1 BOOK | Restored | 51 | 5.18 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 1 2.0% | 1 3.9% | 2 7.8% | 4 15.7% | 3 21.6% | 2 25.5% | 3 31.4% | 8 47.1% | 3 53% | 3 59% | 2 63% | 3 69% | 4 76% | 5 86% | 1 88% | 2 92% | 0 92% | 2 96% | 2 100% | 0 100% |
| 1 BOOK | Signature | 31 | 4.19 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 3.2% | 0 3.2% | 1 6.5% | 1 9.7% | 2 16.1% | 1 19.4% | 4 32.3% | 6 52% | 3 61% | 4 74% | 3 84% | 1 87% | 2 94% | 0 94% | 1 97% | 1 100% | 0 100% |
| 1 BOOK | Qualified | 7 | 4.86 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 14.3% | 0 14.3% | 0 14.3% | 0 14.3% | 0 14.3% | 0 14.3% | 0 14.3% | 0 14.3% | 1 28.6% | 1 42.9% | 3 86% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| Showcase #30 (1961, DC Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 0% 0 9.8 | 0% 0 9.6 | 0% 4 9.4 | 1% 10 9.2 | 1% 10 9.0 | 3% 23 8.5 | 4% 37 8.0 | 4% 31 7.5 | 6% 52 7.0 | 8% 64 6.5 | 7% 59 6.0 | 7% 54 5.5 | 9% 78 5.0 | 10% 79 4.5 | 9% 72 4.0 | 8% 69 3.5 | 7% 59 3.0 | 5% 45 2.5 | 4% 30 2.0 | 2% 16 1.8 | 2% 15 1.5 | 1% 9 1.0 | 1% 7 0.5 |
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||