| Image Thumbs | |
| Cert Num | 1323599 |
| Cert Date | 2016-11-01 |
| Catalog Number | E11 |
| Country | USA |
| Year | 1917 |
| Denom | 10c |
| Color | Ultramarine |
| Grade | Ungraded |
| Description | Mint OGph |
| Opinion | it is a genuine unused, o.g., previously hinged, top margin Plate No. 11816 block of six, pink back variety (the bottom right stamp previously hinged and the other stamps never hinged). |
| Cert Link | http://psestamp.com/Cert/1323599 |