| Image Thumbs | |
| Cert Num | 1349292 |
| Cert Date | 2018-08-23 |
| Catalog Number | 569 |
| Country | USA |
| Year | 1923 |
| Denom | 30c |
| Color | Olive brown |
| Grade | XF 90 |
| Description | Mint OGnh |
| Opinion | it is a genuine unused o.g., never hinged, left margin block of four with Plate No. 17447. |
| Cert Link | http://psestamp.com/Cert/1349292 |