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| Cert Num | 1259463 |
| Cert Date | 2013-01-25 |
| Catalog Number | C18 |
| Country | USA |
| Year | 1933 |
| Denom | 50c |
| Color | Green |
| Grade | F 70 |
| Description | Mint OGph |
| Opinion | it is a genuine unused, o.g., previously hinged, bottom margin Plate No. 21171 block of six, (the bottom center stamp never hinged), the bottom center stamp with small natural gum skips. |
| Cert Link | http://psestamp.com/Cert/1259463 |