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| Fantastic Four #51 | ||
| Marvel Comics, 6/66 | ||
| Stan Lee story | 1st appearance of the Negative Zone. | |
| Jack Kirby and Joe Sinnott cover and art | 2nd appearance of Wyatt Wingfoot. | |
| 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 | 999 | 6.54 | 0 0.00% | 0 0.00% | 0 0.0% | 8 0.8% | 24 3.2% | 39 7.1% | 54 12.5% | 86 21.1% | 90 30.1% | 94 39.5% | 90 48.5% | 100 59% | 93 68% | 52 73% | 78 81% | 58 87% | 61 93% | 29 96% | 18 97% | 13 99% | 5 99% | 5 100% | 1 100% | 0 100% | 1 100% | 
| 1 BOOK | Signature | 80 | 5.54 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 1 1.3% | 0 1.3% | 4 6.3% | 1 7.5% | 4 12.5% | 6 20.0% | 8 30.0% | 5 36.3% | 9 47.5% | 10 60% | 5 66% | 9 78% | 7 86% | 2 89% | 0 89% | 4 94% | 0 94% | 1 95% | 0 95% | 1 96% | 3 100% | 
| 1 BOOK | Restored | 17 | 6.42 | 0 0.00% | 0 0.00% | 1 5.9% | 0 5.9% | 1 11.8% | 0 11.8% | 0 11.8% | 0 11.8% | 1 17.6% | 2 29.4% | 5 59% | 1 65% | 0 65% | 0 65% | 2 76% | 3 94% | 0 94% | 0 94% | 0 94% | 0 94% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 
| 1 BOOK | Qualified | 9 | 5.11 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 11.1% | 0 11.1% | 0 11.1% | 0 11.1% | 1 22.2% | 0 22.2% | 1 33.3% | 1 44.4% | 2 67% | 2 89% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 
| Fantastic Four #51 (1966, Marvel Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0%  0 10 | 0%  0 9.9 | 0%  0 9.8 | 1%  8 9.6 | 2%  24 9.4 | 4%  39 9.2 | 5%  54 9.0 | 9%  86 8.5 | 9%  90 8.0 | 9%  94 7.5 | 9%  90 7.0 | 10%  100 6.5 | 9%  93 6.0 | 5%  52 5.5 | 8%  78 5.0 | 6%  58 4.5 | 6%  61 4.0 | 3%  29 3.5 | 2%  18 3.0 | 1%  13 2.5 | 1%  5 2.0 | 1%  5 1.8 | 0%  1 1.5 | 0%  0 1.0 | 0%  1 0.5 | 
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||

