| Image Thumbs | |
| Cert Num | 1321007 |
| Cert Date | 2016-09-01 |
| Catalog Number | 366 |
| Country | USA |
| Year | 1909 |
| Denom | 15c |
| Color | Pale ultramarine |
| Grade | Ungraded |
| Description | Mint OGph |
| Opinion | it is a genuine unused, o.g., previously hinged, block of four, (the top right and bottom stamps never hinged). |
| Cert Link | http://psestamp.com/Cert/1321007 |