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| Cert Num | 1391111 |
| Cert Date | 2021-02-23 |
| Catalog Number | K8 |
| Country | USA |
| Year | 1919 |
| Denom | 16c on 8c |
| Color | Olive bister |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, top margin Plate No. 10787 block of six. |
| Cert Link | http://psestamp.com/Cert/1391111 |