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| Cert Num | 1221742 |
| Cert Date | 2010-05-25 |
| Catalog Number | C22 |
| Country | USA |
| Year | 1937 |
| Denom | 50c |
| Color | Carmine |
| Grade | XF-Sup 95 |
| Description | Mint OGnh |
| Opinion | it is a genuine unused, o.g., never hinged, bottom margin Plate No. 21628 block of six. |
| Cert Link | http://psestamp.com/Cert/1221742 |