| Image Thumbs | |
| Cert Num | 1312723 |
| Cert Date | 2016-02-15 |
| Catalog Number | C11 |
| Country | USA |
| Year | 1928 |
| Denom | 5c |
| Color | Carmine & blue |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, lower right margin block of eight (2X4) low flying plane variety, pos. 2 with a natural paper inclusion and pos. 6 with a small gum crease. |
| Cert Link | http://psestamp.com/Cert/1312723 |