| Image Thumbs | |
| Cert Num | 1338201 |
| Cert Date | 2017-11-16 |
| Catalog Number | 1284 |
| Country | USA |
| Year | 1966 |
| Denom | 6c |
| Color | Gray brown |
| Grade | Superb 98 |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, bottom left margin Plate No. 28343 block of four. |
| Cert Link | http://psestamp.com/Cert/1338201 |