| Image Thumbs | |
| Cert Num | 1259635 |
| Cert Date | 2013-01-11 |
| Catalog Number | 525c |
| Country | USA |
| Year | 1918 |
| Denom | 1c |
| Color | Gray green |
| Grade | Ungraded |
| Description | Mint OGh |
| Opinion | it is a genuine unused, o.g., hinged, block of four, with a natural straight edge at the right. |
| Cert Link | http://psestamp.com/Cert/1259635 |