| Image Thumbs | |
| Cert Num | 1338816 |
| Cert Date | 2017-12-06 |
| Catalog Number | 830 |
| Country | USA |
| Year | 1938 |
| Denom | 30c |
| Color | Deep ultramarine |
| Grade | XF 90 |
| Description | Mint OGph |
| Opinion | it is a genuine unused, o.g., previously hinged, lower right margin Plate No. 22164 block of four (the left stamps NH). |
| Cert Link | http://psestamp.com/Cert/1338816 |