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| X-Men #125 | ||
| Marvel Comics, 9/79 | ||
| Chris Claremont story | 1st appearance of Mutant X (Proteus). | |
| John Byrne & Terry Austin art | Mastermind appearance. | |
| Dave Cockrum & Terry Austin cover | Magneto 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 | 2,843 | 8.97 | 0 0.00% | 0 0.00% | 464 16.3% | 596 37.3% | 538 56% | 322 68% | 247 76% | 216 84% | 115 88% | 97 91% | 73 94% | 59 96% | 42 97% | 27 98% | 24 99% | 14 100% | 4 100% | 2 100% | 2 100% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Signature | 214 | 8.87 | 0 0.00% | 0 0.00% | 30 14.0% | 42 33.6% | 36 50% | 25 62% | 21 72% | 19 81% | 12 86% | 10 91% | 3 93% | 7 96% | 4 98% | 1 98% | 1 99% | 0 99% | 0 99% | 1 99% | 2 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Restored | 10 | 7.41 | 0 0.00% | 0 0.00% | 0 0.0% | 1 10.0% | 0 10.0% | 0 10.0% | 0 10.0% | 2 30.0% | 2 50% | 1 60% | 2 80% | 0 80% | 0 80% | 1 90% | 0 90% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Qualified | 6 | 8.80 | 0 0.00% | 0 0.00% | 0 0.0% | 1 16.7% | 3 67% | 0 67% | 0 67% | 0 67% | 0 67% | 2 100% | 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% | 0 100% |
| X-Men #125 (1979, Marvel Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 16% 464 9.8 | 21% 596 9.6 | 19% 538 9.4 | 11% 322 9.2 | 9% 247 9.0 | 8% 216 8.5 | 4% 115 8.0 | 3% 97 7.5 | 3% 73 7.0 | 2% 59 6.5 | 1% 42 6.0 | 1% 27 5.5 | 1% 24 5.0 | 0% 14 4.5 | 0% 4 4.0 | 0% 2 3.5 | 0% 2 3.0 | 0% 1 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 November 03, 2026 | ||||||||||||||||||||||||