10th National Free Balloon Competition for the A. Wańkowicz Challenge Cup in Mościce, 1938; letter sent by the "Mościce" balloon
All items can be viewed at our office in Warsaw at 7/19 Romualda Mielczarskiego Street, Mon–Fri, 8:30 a.m.–4:30 p.m.
To facilitate your visit, please contact us in advance by phone at 691-666-727.
