| Image Thumbs | |
| Cert Num | 1311822 |
| Cert Date | 2016-01-10 |
| Catalog Number | C18 |
| Country | USA |
| Year | 1933 |
| Denom | 50c |
| Color | Green |
| Grade | F-VF 75 |
| Description | Mint OGph |
| Opinion | it is a genuine unused, o.g., previously hinged, top margin block of four, with Plate No. 21172 (the bottom stamps never hinged) with minor natural gum skips. |
| Cert Link | http://psestamp.com/Cert/1311822 |