| Image Thumbs | |
| Cert Num | 1398091 |
| Cert Date | 2021-08-20 |
| Catalog Number | C23 |
| Country | USA |
| Year | 1938 |
| Denom | 6c |
| Color | Dark blue & carmine |
| Grade | F 70 |
| Description | Mint OGph |
| Opinion | it is genuine unused, o.g., previously hinged, top margin block of six, 3x2, with Plate Nos. 21917 and 22186, and two TOP (type IV marginal markings), the left and center stamps with natural gum disturbances. |
| Cert Link | http://psestamp.com/Cert/1398091 |