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| Amazing Spider-Man #138 | ||
| Marvel Comics, 11/74 | ||
| Gerry Conway story, Ross Andru, | Origin and 1st appearance of | |
| Frank Giacoia and Dave Hunt art | Mindworm (William Turner). | |
| Gil Kane and John Romita 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 | 852 | 8.78 | 0 0.00% | 0 0.00% | 94 11.0% | 166 30.5% | 139 46.8% | 100 59% | 93 69% | 77 79% | 50 84% | 35 88% | 29 92% | 21 94% | 18 96% | 8 97% | 7 98% | 4 99% | 5 99% | 3 100% | 1 100% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 1 100% |
| 1 BOOK | Signature | 18 | 8.53 | 0 0.00% | 0 0.00% | 1 5.6% | 5 33.3% | 2 44.4% | 2 56% | 1 61% | 2 72% | 1 78% | 1 83% | 1 89% | 0 89% | 0 89% | 0 89% | 2 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Qualified | 17 | 6.94 | 0 0.00% | 0 0.00% | 0 0.0% | 1 5.9% | 1 11.8% | 2 23.5% | 0 23.5% | 2 35.3% | 1 41.2% | 0 41.2% | 2 53% | 1 59% | 2 71% | 1 76% | 1 82% | 1 88% | 2 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Restored | 3 | 8.20 | 0 0.00% | 0 0.00% | 0 0.0% | 1 33.3% | 0 33.3% | 0 33.3% | 0 33.3% | 0 33.3% | 1 67% | 0 67% | 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% |
| Amazing Spider-Man #138 (1974, Marvel Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 11% 94 9.8 | 19% 166 9.6 | 16% 139 9.4 | 12% 100 9.2 | 11% 93 9.0 | 9% 77 8.5 | 6% 50 8.0 | 4% 35 7.5 | 3% 29 7.0 | 2% 21 6.5 | 2% 18 6.0 | 1% 8 5.5 | 1% 7 5.0 | 0% 4 4.5 | 1% 5 4.0 | 0% 3 3.5 | 0% 1 3.0 | 0% 1 2.5 | 0% 0 2.0 | 0% 0 1.8 | 0% 0 1.5 | 0% 0 1.0 | 0% 1 0.5 |
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||