| Image Thumbs | |
| Cert Num | 1275919 |
| Cert Date | 2013-12-28 |
| Catalog Number | C2 |
| Country | USA |
| Year | 1918 |
| Denom | 16c |
| Color | Green |
| Grade | XF 90 |
| Description | Mint OGph |
| Opinion | it is a genuine unused, o.g., previously hinged, center line block of four (the top left and bottom stamps never hinged). |
| Cert Link | http://psestamp.com/Cert/1275919 |