| Image Thumbs | |
| Cert Num | 1314747 |
| Cert Date | 2016-04-21 |
| Catalog Number | 830 |
| Country | USA |
| Year | 1938 |
| Denom | 30c |
| Color | Deep ultramarine |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, lower left margin Plate No. 22833 block of four. |
| Cert Link | http://psestamp.com/Cert/1314747 |