| Image Thumbs | |
| Cert Num | 1214931 |
| Cert Date | 2009-12-21 |
| Catalog Number | 570 |
| Country | USA |
| Year | 1922 |
| Denom | 50c |
| Color | Lilac |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, block of four ( previously hinged only in the lower left selvage), with minor natural gum skips on the bottom stamps. |
| Cert Link | http://psestamp.com/Cert/1214931 |