| Image Thumbs | |
| Cert Num | 1260719 |
| Cert Date | 2013-02-18 |
| Catalog Number | 545 |
| Country | USA |
| Year | 1921 |
| Denom | 1c |
| Color | Green |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, block of four, the top stamps with a natural straight edge at the top and natural gum skips and the bottom right stamp with a small natural gum wrinkle. |
| Cert Link | http://psestamp.com/Cert/1260719 |