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| Action Comics #12 | ||
| DC Comics, 5/39 | ||
| Jerry Siegel and Gardner Fox stories | Zatara sci-fi cover. | |
| Joe Shuster and Bernard Baily art | 1 panel ad for Detective Comics #27 | |
| Fred Guardineer 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 | 33 | 3.38 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 3.0% | 0 3.0% | 1 6.1% | 3 15.2% | 0 15.2% | 2 21.2% | 0 21.2% | 3 30.3% | 0 30.3% | 3 39.4% | 2 45.5% | 3 55% | 2 61% | 2 67% | 0 67% | 3 76% | 4 88% | 4 100% |
| 1 BOOK | Restored | 17 | 5.12 | 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 5.9% | 2 17.6% | 3 35.3% | 2 47.1% | 1 53% | 1 59% | 0 59% | 1 65% | 1 71% | 1 76% | 0 76% | 1 82% | 0 82% | 0 82% | 2 94% | 1 100% | 0 100% |
| 1 BOOK | Qualified | 1 | 0.50 | 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% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 100% |
| Action Comics #12 (1939, 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 | 0% 0 9.0 | 3% 1 8.5 | 0% 0 8.0 | 3% 1 7.5 | 9% 3 7.0 | 0% 0 6.5 | 6% 2 6.0 | 0% 0 5.5 | 9% 3 5.0 | 0% 0 4.5 | 9% 3 4.0 | 6% 2 3.5 | 9% 3 3.0 | 6% 2 2.5 | 6% 2 2.0 | 0% 0 1.8 | 9% 3 1.5 | 12% 4 1.0 | 12% 4 0.5 |
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||