| Image Thumbs | |
| Cert Num | 1366399 |
| Cert Date | 2019-10-28 |
| Catalog Number | 564b |
| Country | USA |
| Year | 1928 |
| Denom | 12c |
| Color | brown violet |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, right margin Plate No. 18922 block of six on special booklet paper with small natural gum skips, and the selvage with staple holes. |
| Cert Link | http://psestamp.com/Cert/1366399 |