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| G.I. Joe, A Real American Hero #21 | ||
| Marvel Comics, 3/84 | ||
| Larry Hama story | 1st appearance of Storm Shadow. | |
| Larry Hama & Steve Leialoha art | Silent issue. | |
| Ed Hannigan & Klaus Janson 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 | 3,107 | 8.39 | 0 0.00% | 1 0.03% | 183 5.9% | 531 23.0% | 425 36.7% | 386 49.1% | 290 58% | 270 67% | 246 75% | 174 81% | 156 86% | 88 89% | 105 92% | 62 94% | 69 96% | 45 98% | 34 99% | 18 99% | 14 100% | 3 100% | 5 100% | 0 100% | 0 100% | 0 100% | 2 100% |
| 1 BOOK | Signature | 323 | 8.44 | 0 0.00% | 0 0.00% | 13 4.0% | 59 22.3% | 50 37.8% | 41 50% | 28 59% | 33 69% | 20 76% | 19 81% | 21 88% | 11 91% | 5 93% | 5 94% | 5 96% | 3 97% | 7 99% | 1 99% | 1 100% | 0 100% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| 1 BOOK | Qualified | 13 | 7.76 | 0 0.00% | 0 0.00% | 0 0.0% | 0 0.0% | 0 0.0% | 2 15.4% | 2 30.8% | 1 38.5% | 1 46.2% | 0 46.2% | 5 85% | 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% |
| 1 BOOK | Restored | 12 | 7.88 | 0 0.00% | 0 0.00% | 0 0.0% | 2 16.7% | 1 25.0% | 0 25.0% | 1 33.3% | 4 67% | 0 67% | 0 67% | 1 75% | 1 83% | 1 92% | 0 92% | 0 92% | 0 92% | 0 92% | 1 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% | 0 100% |
| G.I. Joe, A Real American Hero #21 (1984, Marvel Comics) CGC Universal Grade Distribution | ||||||||||||||||||||||||
| 0% 0 10 | 0% 1 9.9 | 6% 183 9.8 | 17% 531 9.6 | 14% 425 9.4 | 12% 386 9.2 | 9% 290 9.0 | 9% 270 8.5 | 8% 246 8.0 | 6% 174 7.5 | 5% 156 7.0 | 3% 88 6.5 | 3% 105 6.0 | 2% 62 5.5 | 2% 69 5.0 | 1% 45 4.5 | 1% 34 4.0 | 1% 18 3.5 | 0% 14 3.0 | 0% 3 2.5 | 0% 5 2.0 | 0% 0 1.8 | 0% 0 1.5 | 0% 0 1.0 | 0% 2 0.5 |
| cgcdata.com, last updated September 16, 2025 | ||||||||||||||||||||||||