| Image Thumbs | |
| Cert Num | 1380558 |
| Cert Date | 2020-08-19 |
| Catalog Number | 511a |
| Country | USA |
| Year | 1917 |
| Denom | 11c |
| Color | Light green |
| Grade | Ungraded |
| Description | Mint OGph |
| Opinion | it is a genuine unused, o.g., previously hinged, top margin Plate No. F13467 block of six, perf 10 at bottom (the bottom right stamp with transitional gauge), the bottom left stamp with a pulled perf at the bottom. |
| Cert Link | http://psestamp.com/Cert/1380558 |