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| Showcase #6 | ||
| DC Comics, 1-2/57 | ||
| Joe Simon, Jack Kirby & Dave Wood story | Origin & 1st appearance of the | |
| Jack Kirby & Marvin Stein art | Challengers of the Unknown (Rocky Davis, | |
| Jack Kirby cover | Prof Haley, Red Ryan & Ace Morgan). | |
| 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 | 235 | 4.53 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 5 2.1% | 4 3.8% | 3 5.1% | 6 7.7% | 12 12.8% | 15 19.1% | 17 26.4% | 23 36.2% | 18 43.8% | 25 54% | 26 66% | 15 72% | 18 80% | 19 88% | 11 92% | 8 96% | 3 97% | 5 99% | 2 100% |
| 1 BOOK | Restored | 23 | 4.57 | 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% | 2 8.7% | 1 13.0% | 0 13.0% | 0 13.0% | 5 34.8% | 4 52% | 2 61% | 3 74% | 1 78% | 2 87% | 1 91% | 1 96% | 0 96% | 0 96% | 0 96% | 1 100% |
| Showcase #6 (1957, 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% 5 9.0 | 2% 4 8.5 | 1% 3 8.0 | 3% 6 7.5 | 5% 12 7.0 | 6% 15 6.5 | 7% 17 6.0 | 10% 23 5.5 | 8% 18 5.0 | 11% 25 4.5 | 11% 26 4.0 | 6% 15 3.5 | 8% 18 3.0 | 8% 19 2.5 | 5% 11 2.0 | 3% 8 1.8 | 1% 3 1.5 | 2% 5 1.0 | 1% 2 0.5 |
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||