细节
Air Mail cover 1903 (17 July) picture postcard of the "Ballonstation am Steinfeld" and addressed to Moravia, bearing Austria 5h. (uncancelled) and dropped over Hungary, postmarked "CZINFÁLVA" (18.7) and with crayon "10" postage due, Austrian 1h. (4) and 6h. postage due adhesives applied and cancelled on arrival (19.7) in Nikolsburg. Ex Sobetzky. Signed Mikulski. Photo