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| Cert Num | 1387133 |
| Cert Date | 2020-12-21 |
| Catalog Number | E13a |
| Country | USA |
| Year | 1928 |
| Denom | 15c |
| Color | deep orange |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, left margin Plate No. 16836 block of six on special booklet paper. |
| Cert Link | http://psestamp.com/Cert/1387133 |