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| Action Comics #20 | ||
| DC Comics, 1/40 | ||
| Siegel, Finger and Fox stories | Ultra (Ultra-Humanite) appearance. | |
| Fred Guardineer, Bert Christman art | "S" left off Superman's chest on cover. | |
| Bob Kane art, Joe Shuster 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 | 60 | 3.29 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 1.7% | 0 1.7% | 1 3.3% | 2 6.7% | 2 10.0% | 1 11.7% | 0 11.7% | 1 13.3% | 3 18.3% | 6 28.3% | 6 38.3% | 5 46.7% | 3 52% | 7 63% | 4 70% | 5 78% | 5 87% | 2 90% | 6 100% |
| 1 BOOK | Restored | 25 | 4.48 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 2 8.0% | 0 8.0% | 4 24.0% | 1 28.0% | 3 40.0% | 2 48.0% | 1 52% | 1 56% | 0 56% | 1 60% | 3 72% | 0 72% | 2 80% | 2 88% | 1 92% | 1 96% | 1 100% |
| 1 BOOK | Qualified | 7 | 2.11 | 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% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 14.3% | 2 42.9% | 0 42.9% | 0 42.9% | 0 42.9% | 1 57% | 0 57% | 1 71% | 2 100% |
| Action Comics #20 (1940, DC Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 0% 0 9.8 | 0% 0 9.6 | 0% 0 9.4 | 0% 0 9.2 | 2% 1 9.0 | 0% 0 8.5 | 2% 1 8.0 | 3% 2 7.5 | 3% 2 7.0 | 2% 1 6.5 | 0% 0 6.0 | 2% 1 5.5 | 5% 3 5.0 | 10% 6 4.5 | 10% 6 4.0 | 8% 5 3.5 | 5% 3 3.0 | 12% 7 2.5 | 7% 4 2.0 | 8% 5 1.8 | 8% 5 1.5 | 3% 2 1.0 | 10% 6 0.5 |
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||