| Image Thumbs | |
| Cert Num | 1298430 |
| Cert Date | 2015-02-24 |
| Catalog Number | 1820a |
| Country | USA |
| Year | 1981 |
| Denom | (18c) |
| Color | Violet |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, imperforate coil pair. |
| Cert Link | http://psestamp.com/Cert/1298430 |