| Image Thumbs | |
| Cert Num | 1335567 |
| Cert Date | 2017-10-04 |
| Catalog Number | C23a |
| Country | USA |
| Year | 1938 |
| Denom | 6c |
| Color | Dark blue & carmine |
| Grade | Ungraded |
| Description | Mint OGph |
| Opinion | it is genuine unused, o.g., previously hinged, right margin block of four, imperf horizontally with horizontal guide line, the bottom left stamp with a natural paper wrinkle. |
| Cert Link | http://psestamp.com/Cert/1335567 |