| Image Thumbs | |
| Cert Num | 1199580 |
| Cert Date | 2009-04-10 |
| Catalog Number | 476 |
| Country | USA |
| Year | 1916 |
| Denom | 20c |
| Color | Light ultramarine |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, block of four. |
| Cert Link | http://psestamp.com/Cert/1199580 |