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| Cert Num | 1274364 |
| Cert Date | 2013-12-05 |
| Catalog Number | 552 |
| Country | USA |
| Year | 1923 |
| Denom | 1c |
| Color | Deep green |
| Grade | Ungraded |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, top margin Plate No. 16557 block of six. |
| Cert Link | http://psestamp.com/Cert/1274364 |