| Image Thumbs | |
| Cert Num | 1300535 |
| Cert Date | 2015-04-07 |
| Catalog Number | C23 |
| Country | USA |
| Year | 1938 |
| Denom | 6c |
| Color | Dark blue & carmine |
| Grade | Ungraded |
| Description | Used |
| Opinion | it is a genuine usage tied on an airmail first flight cover for AM-2001, rotary wing aircraft experimental route. |
| Cert Link | http://psestamp.com/Cert/1300535 |