| Image Thumbs | |
| Cert Num | 1366401 |
| Cert Date | 2019-10-28 |
| Catalog Number | 566a |
| Country | USA |
| Year | 1928 |
| Denom | 15c |
| Color | gray |
| Grade | Ungraded |
| Description | Mint OGph |
| Opinion | it is a genuine unused, o.g., previously hinged, bottom margin Plate No. 17430 block of six on special booklet paper (the top center stamp PH, the other stamps NH). |
| Cert Link | http://psestamp.com/Cert/1366401 |