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| Justice League of America #91 | ||
| DC Comics, 8/71 | ||
| Mike Friedrich story | 1st meeting of Golden Age | |
| Dick Dillin and Joe Giella art | and Silver Age Robin. | |
| Neal Adams cover | Justice Society of America appearance. | |
| 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 | 87 | 8.48 | 0 0.00% | 0 0.00% | 6 6.9% | 11 19.5% | 15 36.8% | 8 46.0% | 13 61% | 6 68% | 5 74% | 6 80% | 9 91% | 1 92% | 4 97% | 0 97% | 0 97% | 2 99% | 0 99% | 0 99% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Signature | 8 | 6.46 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 1 12.5% | 0 12.5% | 1 25.0% | 0 25.0% | 0 25.0% | 3 63% | 0 63% | 1 75% | 0 75% | 0 75% | 0 75% | 1 88% | 0 88% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| Justice League of America #91 (1971, DC Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 7% 6 9.8 | 13% 11 9.6 | 17% 15 9.4 | 9% 8 9.2 | 15% 13 9.0 | 7% 6 8.5 | 6% 5 8.0 | 7% 6 7.5 | 10% 9 7.0 | 1% 1 6.5 | 5% 4 6.0 | 0% 0 5.5 | 0% 0 5.0 | 2% 2 4.5 | 0% 0 4.0 | 0% 0 3.5 | 1% 1 3.0 | 0% 0 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 September 16, 2025 | ||||||||||||||||||||||||