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| X-Men #121 | ||
| Marvel Comics, 5/79 | ||
| Chris Claremont story | 1st full appearance of Alpha Flight. | |
| John Byrne & Terry Austin art | Misty Knight & Colleen Wing appearance. | |
| Dave Cockrum & Terry Austin cover | John Byrne cameo. | |
| 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 | 4,832 | 8.69 | 0 0.00% | 0 0.00% | 507 10.5% | 838 27.8% | 786 44.1% | 551 56% | 461 65% | 476 75% | 333 82% | 239 87% | 204 91% | 123 94% | 120 96% | 64 97% | 49 98% | 22 99% | 27 99% | 15 100% | 8 100% | 6 100% | 1 100% | 1 100% | 1 100% | 0 100% | 0 100% |
| 1 BOOK | Signature | 341 | 8.73 | 0 0.00% | 0 0.00% | 43 12.6% | 47 26.4% | 66 45.7% | 40 57% | 40 69% | 27 77% | 22 84% | 15 88% | 15 92% | 4 94% | 6 95% | 1 96% | 4 97% | 6 99% | 1 99% | 4 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Restored | 17 | 7.79 | 0 0.00% | 0 0.00% | 0 0.0% | 4 23.5% | 1 29.4% | 3 47.1% | 1 53% | 0 53% | 0 53% | 1 59% | 2 71% | 1 76% | 2 88% | 0 88% | 1 94% | 0 94% | 0 94% | 0 94% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Qualified | 14 | 8.74 | 0 0.00% | 0 0.00% | 0 0.0% | 3 21.4% | 2 35.7% | 1 42.9% | 2 57% | 2 71% | 2 86% | 1 93% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| X-Men #121 (1979, Marvel Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 10% 507 9.8 | 17% 838 9.6 | 16% 786 9.4 | 11% 551 9.2 | 10% 461 9.0 | 10% 476 8.5 | 7% 333 8.0 | 5% 239 7.5 | 4% 204 7.0 | 3% 123 6.5 | 2% 120 6.0 | 1% 64 5.5 | 1% 49 5.0 | 0% 22 4.5 | 1% 27 4.0 | 0% 15 3.5 | 0% 8 3.0 | 0% 6 2.5 | 0% 1 2.0 | 0% 1 1.8 | 0% 1 1.5 | 0% 0 1.0 | 0% 0 0.5 |
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||