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| Action Comics #340 | ||
| DC Comics, 8/66 | ||
| Jim Shooter story | Origin and 1st appearance of the | |
| Al Plastino and Jim Mooney art | Parasite (Raymond Maxwell Jensen). | |
| Curt Swan and George Klein cover | Superman centerfold pin-up by Curt Swan. | |
| 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 | 543 | 6.36 | 0 0.00% | 0 0.00% | 2 0.4% | 11 2.4% | 15 5.2% | 17 8.3% | 24 12.7% | 39 19.9% | 41 27.4% | 49 36.5% | 42 44.2% | 55 54% | 44 62% | 44 71% | 37 77% | 37 84% | 40 92% | 18 95% | 11 97% | 4 98% | 3 98% | 1 98% | 1 99% | 0 99% | 8 100% |
| 1 BOOK | Signature | 42 | 5.59 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 1 2.4% | 1 4.8% | 3 11.9% | 0 11.9% | 2 16.7% | 5 28.6% | 1 31.0% | 3 38.1% | 7 55% | 4 64% | 4 74% | 5 86% | 4 95% | 2 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Qualified | 22 | 5.67 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 1 4.5% | 1 9.1% | 0 9.1% | 1 13.6% | 1 18.2% | 2 27.3% | 2 36.4% | 1 40.9% | 2 50% | 2 59% | 4 77% | 3 91% | 2 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Restored | 4 | 4.88 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 25.0% | 0 25.0% | 0 25.0% | 1 50% | 1 75% | 0 75% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| Action Comics #340 (1966, DC Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 0% 2 9.8 | 2% 11 9.6 | 3% 15 9.4 | 3% 17 9.2 | 4% 24 9.0 | 7% 39 8.5 | 8% 41 8.0 | 9% 49 7.5 | 8% 42 7.0 | 10% 55 6.5 | 8% 44 6.0 | 8% 44 5.5 | 7% 37 5.0 | 7% 37 4.5 | 7% 40 4.0 | 3% 18 3.5 | 2% 11 3.0 | 1% 4 2.5 | 1% 3 2.0 | 0% 1 1.8 | 0% 1 1.5 | 0% 0 1.0 | 1% 8 0.5 |
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||