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| Defenders #21 | ||
| Marvel Comics, 3/75 | ||
| Steve Gerber story | 1st appearance of the Headmen. | |
| Sal Buscema & Sal Trapani art | Thing cameo on first page. | |
| Gil Kane & Klaus Janson 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 | 51 | 8.61 | 0 0.00% | 0 0.00% | 7 13.7% | 8 29.4% | 12 53% | 6 65% | 4 73% | 2 76% | 1 78% | 3 84% | 2 88% | 0 88% | 0 88% | 2 92% | 2 96% | 0 96% | 1 98% | 0 98% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Signature | 2 | 6.50 | 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% | 1 50% | 0 50% | 0 50% | 0 50% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| Defenders #21 (1975, Marvel Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 14% 7 9.8 | 16% 8 9.6 | 24% 12 9.4 | 12% 6 9.2 | 8% 4 9.0 | 4% 2 8.5 | 2% 1 8.0 | 6% 3 7.5 | 4% 2 7.0 | 0% 0 6.5 | 0% 0 6.0 | 4% 2 5.5 | 4% 2 5.0 | 0% 0 4.5 | 2% 1 4.0 | 0% 0 3.5 | 2% 1 3.0 | 0% 0 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 | ||||||||||||||||||||||||