| Image Thumbs | |
| Cert Num | 1349881 |
| Cert Date | 2018-09-06 |
| Catalog Number | 531 |
| Country | USA |
| Year | 1919 |
| Denom | 1c |
| Color | Green |
| Grade | Gem 100J |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, center line block of four. |
| Cert Link | http://psestamp.com/Cert/1349881 |