| Image Thumbs | |
| Cert Num | 1221674 |
| Cert Date | 2010-05-07 |
| Catalog Number | 1146 |
| Country | USA |
| Year | 1960 |
| Denom | 4c |
| Color | Dull blue |
| Grade | XF 90 |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, top left margin Plate No. 26541 block of four with a small scuff in the lower right stamp. |
| Cert Link | http://psestamp.com/Cert/1221674 |