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| Detective Comics #409 | ||
| DC Comics, 3/71 | ||
| Frank Robbins story, Neal Adams cover | Batgirl backup story. | |
| Bob Brown, Frank Giacoia, | ||
| Don Heck and Dick Giordano art | ||
| 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 | 136 | 8.60 | 0 0.00% | 0 0.00% | 3 2.2% | 16 14.0% | 24 31.6% | 25 50% | 18 63% | 16 75% | 12 84% | 5 88% | 6 92% | 2 93% | 2 95% | 3 97% | 1 98% | 1 99% | 1 99% | 0 99% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Signature | 12 | 7.62 | 0 0.00% | 0 0.00% | 0 0.0% | 1 8.3% | 2 25.0% | 0 25.0% | 0 25.0% | 2 41.7% | 2 58% | 1 67% | 0 67% | 1 75% | 0 75% | 2 92% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Restored | 1 | 4.00 | 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% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| Detective Comics #409 (1971, DC Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 0 9.9 | 2% 3 9.8 | 12% 16 9.6 | 18% 24 9.4 | 18% 25 9.2 | 13% 18 9.0 | 12% 16 8.5 | 9% 12 8.0 | 4% 5 7.5 | 4% 6 7.0 | 1% 2 6.5 | 1% 2 6.0 | 2% 3 5.5 | 1% 1 5.0 | 1% 1 4.5 | 1% 1 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 September 16, 2025 | ||||||||||||||||||||||||