| Image Thumbs | |
| Cert Num | 1204584 |
| Cert Date | 2009-06-29 |
| Catalog Number | O37 |
| Country | USA |
| Year | 1873 |
| Denom | 3c |
| Color | Ultramarine |
| Grade | Ungraded |
| Description | Mint OGh |
| Opinion | it is a genuine unused, o.g., hinged, block of four. |
| Cert Link | http://psestamp.com/Cert/1204584 |