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| Superman #51 | ||
| DC Comics, 3-4/48 | ||
| Alvin Schwartz story | Mr. Mxyztplk appearance. | |
| Win Mortimer and Curt Swan art | Last Jerry Siegel and Joe Shuster | |
| Wayne Boring and Stan Kaye cover | credits in title until #302 in 1976 | |
| 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 | 106 | 5.55 | 0 0.00% | 0 0.00% | 0 0.0% | 1 0.9% | 0 0.9% | 0 0.9% | 5 5.7% | 6 11.3% | 7 17.9% | 3 20.8% | 10 30.2% | 13 42.5% | 8 50% | 5 55% | 5 59% | 14 73% | 8 80% | 7 87% | 4 91% | 2 92% | 2 94% | 3 97% | 0 97% | 3 100% | 0 100% |
| 1 BOOK | Restored | 4 | 4.38 | 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% | 0 0.0% | 1 25.0% | 1 50% | 0 50% | 0 50% | 1 75% | 0 75% | 0 75% | 0 75% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Signature | 1 | 2.50 | 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% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Qualified | 1 | 4.50 | 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% | 0 0.0% | 0 0.0% | 0 0.0% | 0 0.0% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| Superman #51 (1948, DC Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 0% 0 9.8 | 1% 1 9.6 | 0% 0 9.4 | 0% 0 9.2 | 5% 5 9.0 | 6% 6 8.5 | 7% 7 8.0 | 3% 3 7.5 | 9% 10 7.0 | 12% 13 6.5 | 8% 8 6.0 | 5% 5 5.5 | 5% 5 5.0 | 13% 14 4.5 | 8% 8 4.0 | 7% 7 3.5 | 4% 4 3.0 | 2% 2 2.5 | 2% 2 2.0 | 3% 3 1.8 | 0% 0 1.5 | 3% 3 1.0 | 0% 0 0.5 |
| cgcdata.com, last updated April 14, 2026 | ||||||||||||||||||||||||