| Image Thumbs | |
| Cert Num | 1371696 |
| Cert Date | 2020-01-16 |
| Catalog Number | 566a |
| Country | USA |
| Year | 1928 |
| Denom | 15c |
| Color | gray |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, top margin Plate No. 17431 block of six, special booklet paper variety. |
| Cert Link | http://psestamp.com/Cert/1371696 |