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| Creatures on the Loose #20 | ||
| Marvel Comics, 11/72 | ||
| George Alec Effinger story | Gullivar Jones, Warrior of Mars. | |
| Gray Morrow art | ||
| Gil Kane 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 | 47 | 9.11 | 0 0.00% | 0 0.00% | 11 23.4% | 14 53% | 7 68% | 3 74% | 2 79% | 2 83% | 5 94% | 1 96% | 0 96% | 0 96% | 0 96% | 1 98% | 0 98% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Restored | 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% |
| Creatures on the Loose #20 (1972, Marvel Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 23% 11 9.8 | 30% 14 9.6 | 15% 7 9.4 | 6% 3 9.2 | 4% 2 9.0 | 4% 2 8.5 | 11% 5 8.0 | 2% 1 7.5 | 0% 0 7.0 | 0% 0 6.5 | 0% 0 6.0 | 2% 1 5.5 | 0% 0 5.0 | 2% 1 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 | ||||||||||||||||||||||||