| Image Thumbs | |
| Cert Num | 1404139 |
| Cert Date | 2022-03-14 |
| Catalog Number | S3a |
| Country | USA |
| Year | 1956 |
| Denom | 50c |
| Color | Ultramarine |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is genuine unused, o.g., never hinged, lower right pane of 100, with Plate No. 166941. |
| Cert Link | http://psestamp.com/Cert/1404139 |