![]() |

| Teenage Mutant Ninja Turtles #23 | ||
| Mirage Studios, 7/89 | ||
| Mark Martin story, cover & art | Gnatrat appearance. | |
| Wraparound 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 | 143 | 9.41 | 0 0.00% | 0 0.00% | 47 32.9% | 45 64% | 20 78% | 12 87% | 7 92% | 3 94% | 4 97% | 2 98% | 1 99% | 1 99% | 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% |
| 1 BOOK | Signature | 6 | 9.30 | 0 0.00% | 0 0.00% | 2 33.3% | 0 33.3% | 0 33.3% | 1 50% | 3 100% | 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% | 0 100% | 0 100% | 0 100% |
| Teenage Mutant Ninja Turtles #23 (1989, Mirage Studios) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 33% 47 9.8 | 31% 45 9.6 | 14% 20 9.4 | 8% 12 9.2 | 5% 7 9.0 | 2% 3 8.5 | 3% 4 8.0 | 1% 2 7.5 | 1% 1 7.0 | 1% 1 6.5 | 1% 1 6.0 | 0% 0 5.5 | 0% 0 5.0 | 0% 0 4.5 | 0% 0 4.0 | 0% 0 3.5 | 0% 0 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 | ||||||||||||||||||||||||