| Image Thumbs | |
| Cert Num | 1369210 |
| Cert Date | 2019-11-18 |
| Catalog Number | E11 |
| Country | USA |
| Year | 1917 |
| Denom | 10c |
| Color | Ultramarine |
| Grade | XF 90J |
| Description | Mint OGh |
| Opinion | it is a genuine unused, o.g., hinged, bottom margin block of four with plate no. (the bottom stamps NH) Pink Back variety. |
| Cert Link | http://psestamp.com/Cert/1369210 |