| Image Thumbs | |
| Cert Num | 1214554 |
| Cert Date | 2010-01-12 |
| Catalog Number | C18 |
| Country | USA |
| Year | 1933 |
| Denom | 50c |
| Color | Green |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, bottom margin Plate No. 21171 block of six, with natural gum creases and gum wrinkles and with three signatures in the bottom margin. |
| Cert Link | http://psestamp.com/Cert/1214554 |