The First Planned Flight of a Stratosphere Balloon-Chocholowski Valley 1938
Now showing: Poland - Postage stamps - 1938 - The First Planned Flight of a Stratosphere Balloon-Chocholowski Valley - 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
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