| Image Thumbs | |
| Cert Num | 1350365 |
| Cert Date | 2018-09-19 |
| Catalog Number | 227P5 |
| Country | USA |
| Year | 1890 |
| Denom | 15c |
| Color | Indigo |
| Grade | XF-Sup 95 |
| Description | Mint NGAI |
| Opinion | it is a genuine plate proof block of four on stamp paper, ogNH. |
| Cert Link | http://psestamp.com/Cert/1350365 |