| Image Thumbs | |
| Cert Num | 1202500 |
| Cert Date | 2009-06-05 |
| Catalog Number | 525a |
| Country | USA |
| Year | 1918 |
| Denom | 1c |
| Color | Dark green |
| Grade | Ungraded |
| Description | Mint OGh |
| Opinion | it is a genuine unused, o.g., hinged, top margin Plate No. 9261 block of six, with a crease at the top right of the selvage and separated and reinforced perfs in the top right selvage. |
| Cert Link | http://psestamp.com/Cert/1202500 |