| Image Thumbs | |
| Cert Num | 1236401 |
| Cert Date | 2011-05-17 |
| Catalog Number | 578 |
| Country | USA |
| Year | 1923 |
| Denom | 1c |
| Color | Green |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged block of four. |
| Cert Link | http://psestamp.com/Cert/1236401 |