| Image Thumbs | |
| Cert Num | 1263509 |
| Cert Date | 2013-03-27 |
| Catalog Number | 512 |
| Country | USA |
| Year | 1917 |
| Denom | 12c |
| Color | Claret brown |
| Grade | Ungraded |
| Description | Mint OGph |
| Opinion | it is a genuine unused, o.g., previously hinged, block of four, (the top left and bottom stamps never hinged). |
| Cert Link | http://psestamp.com/Cert/1263509 |