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| Avengers #31 | ||
| Marvel Comics, 8/66 | ||
| Stan Lee story | ||
| Don Heck and Frank Giacoia cover and art | ||
| 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 | 329 | 7.60 | 0 0.00% | 0 0.00% | 4 1.2% | 11 4.6% | 29 13.4% | 29 22.2% | 42 35.0% | 29 43.8% | 44 57% | 33 67% | 21 74% | 17 79% | 13 83% | 15 87% | 13 91% | 13 95% | 6 97% | 5 98% | 0 98% | 2 99% | 1 99% | 0 99% | 1 100% | 0 100% | 1 100% |
| 1 BOOK | Signature | 12 | 7.10 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 1 8.3% | 1 16.7% | 1 25.0% | 0 25.0% | 3 50% | 1 58% | 2 75% | 2 92% | 0 92% | 0 92% | 0 92% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Restored | 6 | 5.75 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 16.7% | 1 33.3% | 1 50% | 0 50% | 0 50% | 0 50% | 0 50% | 1 67% | 1 83% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Qualified | 1 | 7.00 | 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% | 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% |
| Avengers #31 (1966, Marvel Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 1% 4 9.8 | 3% 11 9.6 | 9% 29 9.4 | 9% 29 9.2 | 13% 42 9.0 | 9% 29 8.5 | 13% 44 8.0 | 10% 33 7.5 | 6% 21 7.0 | 5% 17 6.5 | 4% 13 6.0 | 5% 15 5.5 | 4% 13 5.0 | 4% 13 4.5 | 2% 6 4.0 | 2% 5 3.5 | 0% 0 3.0 | 1% 2 2.5 | 0% 1 2.0 | 0% 0 1.8 | 0% 1 1.5 | 0% 0 1.0 | 0% 1 0.5 |
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||