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| Cert Num | 1231577 |
| Cert Date | 2011-01-06 |
| Catalog Number | 422 |
| Country | USA |
| Year | 1912 |
| Denom | 50c |
| Color | Violet |
| Grade | Ungraded |
| Description | Mint OGh |
| Opinion | it is a genuine unused, o.g., hinged, block of four, Plate No. 5749, partial Imprint and A (the bottom stamps never hinged). |
| Cert Link | http://psestamp.com/Cert/1231577 |