| Image Thumbs | |
| Cert Num | 1376686 |
| Cert Date | 2020-05-18 |
| Catalog Number | 531 |
| Country | USA |
| Year | 1919 |
| Denom | 1c |
| Color | Green |
| Grade | Superb 98 |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, center line block of four. |
| Cert Link | http://psestamp.com/Cert/1376686 |