| Image Thumbs | |
| Cert Num | 1394432 |
| Cert Date | 2021-05-11 |
| Catalog Number | 184TC6a |
| Country | USA |
| Year | 1879 |
| Denom | 3c |
| Color | ultramarine |
| Grade | XF 90 |
| Description | Mint OGh |
| Opinion | it is a genuine trial color plate proof on stamp paper, gummed and perforated. |
| Cert Link | http://psestamp.com/Cert/1394432 |