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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 | 5,113 | 8.69 | 0 0.00% | 0 0.00% | 544 10.6% | 889 28.0% | 837 44.4% | 571 56% | 484 65% | 503 75% | 355 82% | 255 87% | 210 91% | 136 94% | 127 96% | 67 97% | 51 98% | 23 99% | 28 99% | 16 100% | 8 100% | 6 100% | 1 100% | 1 100% | 1 100% | 0 100% | 0 100% |
| 1 BOOK | Signature | 363 | 8.73 | 0 0.00% | 0 0.00% | 47 12.9% | 52 27.3% | 67 45.7% | 44 58% | 41 69% | 28 77% | 22 83% | 16 87% | 18 92% | 5 94% | 7 96% | 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 | 21 | 7.64 | 0 0.00% | 0 0.00% | 0 0.0% | 4 19.0% | 1 23.8% | 3 38.1% | 2 47.6% | 1 52% | 0 52% | 2 62% | 2 71% | 1 76% | 2 86% | 0 86% | 1 90% | 0 90% | 0 90% | 0 90% | 2 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Qualified | 15 | 8.52 | 0 0.00% | 0 0.00% | 0 0.0% | 3 20.0% | 2 33.3% | 1 40.0% | 2 53% | 2 67% | 2 80% | 1 87% | 1 93% | 0 93% | 0 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% |
| X-Men #121 (1979, Marvel Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 11% 544 9.8 | 17% 889 9.6 | 16% 837 9.4 | 11% 571 9.2 | 9% 484 9.0 | 10% 503 8.5 | 7% 355 8.0 | 5% 255 7.5 | 4% 210 7.0 | 3% 136 6.5 | 2% 127 6.0 | 1% 67 5.5 | 1% 51 5.0 | 0% 23 4.5 | 1% 28 4.0 | 0% 16 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 November 03, 2026 | ||||||||||||||||||||||||