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| Superboy #20 | ||
| DC Comics, 6-7/52 | ||
| Gardner Fox story | ||
| Curt Swan, John Sikela and | ||
| John Fischetti art, Win Mortimer 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 | 46 | 6.81 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 2 4.3% | 2 8.7% | 4 17.4% | 4 26.1% | 5 37.0% | 4 45.7% | 5 57% | 5 67% | 3 74% | 1 76% | 2 80% | 4 89% | 1 91% | 3 98% | 0 98% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Restored | 2 | 5.00 | 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% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 2 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| Superboy #20 (1952, DC Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 0% 0 9.8 | 0% 0 9.6 | 4% 2 9.4 | 4% 2 9.2 | 9% 4 9.0 | 9% 4 8.5 | 11% 5 8.0 | 9% 4 7.5 | 11% 5 7.0 | 11% 5 6.5 | 7% 3 6.0 | 2% 1 5.5 | 4% 2 5.0 | 9% 4 4.5 | 2% 1 4.0 | 7% 3 3.5 | 0% 0 3.0 | 2% 1 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 | ||||||||||||||||||||||||