| Image Thumbs | |
| Cert Num | 1241038 |
| Cert Date | 2011-09-23 |
| Catalog Number | C1 |
| Country | USA |
| Year | 1918 |
| Denom | 6c |
| Color | Orange |
| Grade | Ungraded |
| Description | Mint OGph |
| Opinion | it is a genuine unused, o.g., previously hinged, center line block of four (the top right and bottom stamps never hinged), the top left stamp with a natural paper wrinkle. |
| Cert Link | http://psestamp.com/Cert/1241038 |