![]() |

| Superboy #221 | ||
| DC Comics, 11/76 | ||
| Jim Shooter story | 1st appearances of Charma | |
| Mike Grell & Bob Wiacek art | & Grimbor the Chainsman. | |
| Mike Grell 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 | 35 | 9.35 | 0 0.00% | 0 0.00% | 10 28.6% | 11 60% | 7 80% | 2 86% | 2 91% | 0 91% | 0 91% | 1 94% | 2 100% | 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% |
| 1 BOOK | Signature | 5 | 9.44 | 0 0.00% | 0 0.00% | 0 0.0% | 3 60% | 0 60% | 2 100% | 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% |
| Superboy #221 (1976, DC Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 29% 10 9.8 | 31% 11 9.6 | 20% 7 9.4 | 6% 2 9.2 | 6% 2 9.0 | 0% 0 8.5 | 0% 0 8.0 | 3% 1 7.5 | 6% 2 7.0 | 0% 0 6.5 | 0% 0 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 | ||||||||||||||||||||||||