| Image Thumbs | |
| Cert Num | 1392790 |
| Cert Date | 2021-04-06 |
| Catalog Number | K13 |
| Country | USA |
| Year | 1919 |
| Denom | 40c on 20c |
| Color | Deep ultramarine |
| Grade | Ungraded |
| Description | Mint RG |
| Opinion | it is genuine unused, REGUMMED, over a hinge thin. |
| Cert Link | http://psestamp.com/Cert/1392790 |