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| Action Comics #242 | ||
| DC Comics, 7/58 | ||
| Otto Binder story, Curt Swan cover | Origin and 1st appearance of Brainiac. | |
| Al Plastino, Jim Mooney and | 1st appearance of the | |
| Horward Sherman art | shrunken city of Kandor. | |
| 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 | 704 | 3.41 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 0.1% | 2 0.4% | 7 1.4% | 2 1.7% | 9 3.0% | 14 5.0% | 33 9.7% | 40 15.3% | 47 22.0% | 55 29.8% | 66 39.2% | 83 51% | 82 63% | 79 74% | 39 79% | 49 86% | 26 90% | 27 94% | 43 100% |
| 1 BOOK | Restored | 39 | 3.83 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 2.6% | 0 2.6% | 0 2.6% | 3 10.3% | 1 12.8% | 2 17.9% | 3 25.6% | 4 35.9% | 1 38.5% | 3 46.2% | 2 51% | 7 69% | 4 79% | 2 85% | 1 87% | 1 90% | 2 95% | 2 100% |
| 1 BOOK | Signature | 8 | 3.23 | 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% | 1 12.5% | 0 12.5% | 2 37.5% | 1 50% | 1 63% | 1 75% | 1 88% | 1 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Qualified | 6 | 4.00 | 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% | 1 16.7% | 1 33.3% | 0 33.3% | 0 33.3% | 0 33.3% | 0 33.3% | 0 33.3% | 0 33.3% | 1 50% | 1 67% | 1 83% | 0 83% | 0 83% | 0 83% | 0 83% | 1 100% |
| Action Comics #242 (1958, 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% 1 9.0 | 0% 2 8.5 | 1% 7 8.0 | 0% 2 7.5 | 1% 9 7.0 | 2% 14 6.5 | 5% 33 6.0 | 6% 40 5.5 | 7% 47 5.0 | 8% 55 4.5 | 9% 66 4.0 | 12% 83 3.5 | 12% 82 3.0 | 11% 79 2.5 | 6% 39 2.0 | 7% 49 1.8 | 4% 26 1.5 | 4% 27 1.0 | 6% 43 0.5 |
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||