| Image Thumbs | |
| Cert Num | 1404086 |
| Cert Date | 2021-12-16 |
| Catalog Number | 525 |
| Country | USA |
| Year | 1918 |
| Denom | 1c |
| Color | Gray green |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is genuine unused, o.g., never hinged, right margin Plate No. 9993 block of six. |
| Cert Link | http://psestamp.com/Cert/1404086 |