| Image Thumbs | |
| Cert Num | 1392511 |
| Cert Date | 2021-03-16 |
| Catalog Number | 1763a |
| Country | USA |
| Year | 1978 |
| Denom | 15c |
| Color | multicolor |
| Grade | XF 90 |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, block of four. |
| Cert Link | http://psestamp.com/Cert/1392511 |