| Image Thumbs | |
| Cert Num | 1211791 |
| Cert Date | 2009-11-10 |
| Catalog Number | 538a |
| Country | USA |
| Year | 1919 |
| Denom | 1c |
| Color | Green |
| Grade | Superb 98 |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, block of four. |
| Cert Link | http://psestamp.com/Cert/1211791 |