| Image Thumbs | |
| Cert Num | 1419818 |
| Cert Date | 2022-12-13 |
| Catalog Number | 515 |
| Country | USA |
| Year | 1917 |
| Denom | 20c |
| Color | Light ultramarine |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is genuine unused, o.g., never hinged, top margin Plate No. 12593 block of six, the bottom right and top center stamps each with a light crease. |
| Cert Link | http://psestamp.com/Cert/1419818 |