Poland
Now showing: Poland - Postage stamps (1860 - 2024) - 1 stamps.
1938
The First Planned Flight of a Stratosphere Balloon-Chocholowski Valley
15. September WM: None Sheetsize: 1 Design: L. Sowiński Engraving: Wł. Vacek Perforation: 12½:12
![[The First Planned Flight of a Stratosphere Balloon-Chocholowski Valley, type ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Poland/Postage-stamps/0293-b.jpg)
