| Image Thumbs | |
| Cert Num | 1317094 |
| Cert Date | 2016-05-17 |
| Catalog Number | C23 |
| Country | USA |
| Year | 1938 |
| Denom | 6c |
| Color | Dark blue & carmine |
| Grade | F 70 |
| Description | Mint OGph |
| Opinion | it is a genuine unused, o.g., previously hinged, center line block of four (the bottom left stamp never hinged) with overall light toning and the bottom right with a perf disc indent. |
| Cert Link | http://psestamp.com/Cert/1317094 |