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| Green Lantern #18 | ||
| DC Comics, 1/63 | ||
| John Broome story | Sinestro appearance. | |
| Kane, Sekowsky and Giella art | ||
| Gil Kane and Joe Giella 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 | 212 | 6.70 | 0 0.00% | 0 0.00% | 1 0.5% | 1 0.9% | 7 4.2% | 11 9.4% | 15 16.5% | 22 26.9% | 16 34.4% | 20 43.9% | 18 52% | 21 62% | 13 68% | 14 75% | 12 81% | 14 87% | 11 92% | 7 96% | 7 99% | 2 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Signature | 5 | 6.68 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 1 20.0% | 0 20.0% | 0 20.0% | 0 20.0% | 0 20.0% | 1 40.0% | 0 40.0% | 1 60% | 0 60% | 1 80% | 0 80% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Qualified | 4 | 5.50 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 25.0% | 0 25.0% | 0 25.0% | 0 25.0% | 0 25.0% | 0 25.0% | 0 25.0% | 1 50% | 1 75% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Restored | 2 | 7.50 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 50% | 0 50% | 0 50% | 0 50% | 0 50% | 0 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% |
| Green Lantern #18 (1963, DC Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 0% 1 9.8 | 0% 1 9.6 | 3% 7 9.4 | 5% 11 9.2 | 7% 15 9.0 | 10% 22 8.5 | 8% 16 8.0 | 9% 20 7.5 | 8% 18 7.0 | 10% 21 6.5 | 6% 13 6.0 | 7% 14 5.5 | 6% 12 5.0 | 7% 14 4.5 | 5% 11 4.0 | 3% 7 3.5 | 3% 7 3.0 | 1% 2 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 February 24, 2026 | ||||||||||||||||||||||||