| Image Thumbs | |
| Cert Num | 1288841 |
| Cert Date | 2014-09-11 |
| Catalog Number | 1632 |
| Country | USA |
| Year | 1976 |
| Denom | 13c |
| Color | dark blue, red & ultramarine |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, pane of 50, of which the Plate No. block is shown below. |
| Cert Link | http://psestamp.com/Cert/1288841 |