| Image Thumbs | |
| Cert Num | 1209207 |
| Cert Date | 2009-09-29 |
| Catalog Number | 511 |
| Country | USA |
| Year | 1917 |
| Denom | 11c |
| Color | Light green |
| Grade | PO 5 |
| Description | Mint RG |
| Opinion | it is genuine unused, REGUMMED over a perf disc indent at the upper right. |
| Cert Link | http://psestamp.com/Cert/1209207 |