| Image Thumbs | |
| Cert Num | 1306971 |
| Cert Date | 2015-09-28 |
| Catalog Number | 578 |
| Country | USA |
| Year | 1923 |
| Denom | 1c |
| Color | Green |
| Grade | Ungraded |
| Description | Used |
| Opinion | it is a genuine block of four with a FAKE White Horse Beach, Mass duplex cancel. |
| Cert Link | http://psestamp.com/Cert/1306971 |