WWI Occupation - Poland
1916 / 1917 Overprints
This set was issued on 1 August 1916, and saw a switch to an overprint of “Gen-Gouv. Warschau”.
Set Date(s)
1 August 1916 / 1917
Watermark(s)
![](https://www.germanstamps.net/wp-content/uploads/2020/03/Germany_wmk_1X_vertical_lozenges-1.jpg)
Album Page(s)
1916 / 1917 Overprints
This set was issued on 1 August 1916, and saw a switch to an overprint of “Gen-Gouv. Warschau”.