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| Cert Num | 1306856 |
| Cert Date | 2015-09-30 |
| Catalog Number | K10 |
| Country | USA |
| Year | 1919 |
| Denom | 20c on 10c |
| Color | Orange yellow |
| Grade | Ungraded |
| Description | Mint OGph |
| Opinion | it is a genuine unused, o.g., previously hinged, right margin Plate No. 8437 block of six (the center and bottom stamps never hinged). |
| Cert Link | http://psestamp.com/Cert/1306856 |