| Image Thumbs | |
| Cert Num | 1208779 |
| Cert Date | 2009-09-21 |
| Catalog Number | 531 |
| Country | USA |
| Year | 1919 |
| Denom | 1c |
| Color | Green |
| Grade | XF 90 |
| Description | Mint OGph |
| Opinion | it is a genuine unused, o.g., previously hinged, block of four (the bottom stamps never hinged). |
| Cert Link | http://psestamp.com/Cert/1208779 |