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| Underdog #1 | ||
| Charlton Comics, 7/70 | ||
| Frank Johnson cover and art | 1st appearance of Underdog in comics. | |
| Underdog pin-ups. | ||
| Based on the animated television series. | ||
| 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 | 71 | 6.42 | 0 0.00% | 0 0.00% | 0 0.0% | 3 4.2% | 4 9.9% | 4 15.5% | 3 19.7% | 4 25.4% | 5 32.4% | 6 40.8% | 4 46.5% | 8 58% | 6 66% | 2 69% | 2 72% | 7 82% | 6 90% | 2 93% | 1 94% | 1 96% | 0 96% | 0 96% | 0 96% | 0 96% | 3 100% |
| 1 BOOK | Qualified | 3 | 4.17 | 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% | 1 33.3% | 2 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| Underdog #1 (1970, Charlton Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 0% 0 9.8 | 4% 3 9.6 | 6% 4 9.4 | 6% 4 9.2 | 4% 3 9.0 | 6% 4 8.5 | 7% 5 8.0 | 8% 6 7.5 | 6% 4 7.0 | 11% 8 6.5 | 8% 6 6.0 | 3% 2 5.5 | 3% 2 5.0 | 10% 7 4.5 | 8% 6 4.0 | 3% 2 3.5 | 1% 1 3.0 | 1% 1 2.5 | 0% 0 2.0 | 0% 0 1.8 | 0% 0 1.5 | 0% 0 1.0 | 4% 3 0.5 |
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||