| Image Thumbs | |
| Cert Num | 1344603 |
| Cert Date | 2018-05-11 |
| Catalog Number | C81 |
| Country | USA |
| Year | 1973 |
| Denom | 21c |
| Color | Red, blue & black |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is genuine unused, o.g., never hinged, with the engraved colors (blue & black) shifted down 4.8mm. |
| Cert Link | http://psestamp.com/Cert/1344603 |