![]() |

| House of Mystery #188 | ||
| DC Comics, 9-10/70 | ||
| Gerry Conway story | Sergio Aragon's gag page. | |
| Bernie Wrightson and Tony DeZuniga 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 | 81 | 8.54 | 0 0.00% | 0 0.00% | 3 3.7% | 10 16.0% | 10 28.4% | 8 38.3% | 16 58% | 10 70% | 8 80% | 5 86% | 4 91% | 3 95% | 2 98% | 1 99% | 0 99% | 0 99% | 0 99% | 0 99% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Signature | 7 | 7.40 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 2 28.6% | 0 28.6% | 0 28.6% | 1 42.9% | 1 57% | 0 57% | 1 71% | 1 86% | 0 86% | 0 86% | 0 86% | 0 86% | 0 86% | 0 86% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Qualified | 3 | 7.33 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 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% |
| 1 BOOK | Restored | 2 | 9.10 | 0 0.00% | 0 0.00% | 0 0.0% | 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% |
| House of Mystery #188 (1970, DC Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 4% 3 9.8 | 12% 10 9.6 | 12% 10 9.4 | 10% 8 9.2 | 20% 16 9.0 | 12% 10 8.5 | 10% 8 8.0 | 6% 5 7.5 | 5% 4 7.0 | 4% 3 6.5 | 2% 2 6.0 | 1% 1 5.5 | 0% 0 5.0 | 0% 0 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 March 17, 2026 | ||||||||||||||||||||||||