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| House of Mystery #197 | ||
| DC Comics, 12/71 | ||
| Jack Oleck and Len Wein stories | ||
| Jack Sparling, Nestor Redondo, | ||
| Dick Dillin art, Neal Adams 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 | 79 | 8.98 | 0 0.00% | 0 0.00% | 2 2.5% | 16 22.8% | 26 56% | 10 68% | 6 76% | 8 86% | 5 92% | 2 95% | 0 95% | 1 96% | 1 97% | 1 99% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Signature | 2 | 9.30 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 1 50% | 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% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| House of Mystery #197 (1971, DC Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 3% 2 9.8 | 20% 16 9.6 | 33% 26 9.4 | 13% 10 9.2 | 8% 6 9.0 | 10% 8 8.5 | 6% 5 8.0 | 3% 2 7.5 | 0% 0 7.0 | 1% 1 6.5 | 1% 1 6.0 | 1% 1 5.5 | 1% 1 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 | ||||||||||||||||||||||||