| Image Thumbs | |
| Cert Num | 1220173 |
| Cert Date | 2010-04-15 |
| Catalog Number | C2 |
| Country | USA |
| Year | 1918 |
| Denom | 16c |
| Color | Green |
| Grade | XF-Sup 95 |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, center line block of four. |
| Cert Link | http://psestamp.com/Cert/1220173 |