Austria
Austria, cancelled post card with stamp
1987. 78. BALLONPOSTFLUG.
Austria, Cover
1916. KuK FELDPOSTAMT 295 2. X. 16. + __K.K. Landwehr Infanterie Regiment Nr. 17.
Austria, cancelled post card with stamp
1984. 28. SONDER-BALLONPOSTFLUG.
Austria, Michel 1174, cancelled post card with stamp
1964. 32. BALLONPOST.
Austria, Michel 1636, cancelled post card with stamp
1980. 63. BALLONPOST.
Austria, Michel 29-44U, Hinged
1906. BOSNIEN HERZEGOWINA. Complete set with 16 stamps. IMPERFORATED. 30 H cancelled.
Austria, Cover
1980. 64. BALLONPOST.
Austria, Michel 1603, Cover
1979. 19. SONDERBALLONFLUG.
Austria, Michel 915, cancelled post card with stamp
1956. 15. BALLONPOST. WIEN BALLON OMO 29.4.1956.
Austria, cancelled postal stationay
1982. 68. BALLONPOST.
Austria, Cover
1985. 74. BALLONPOST.
Austria, Michel 1878, cancelled post card with stamp
1987. BALLONPOST WERBESHAU.
Austria, Michel 406, Mint never hinged
1922. 3000 Kr.
Austria, Cover
1992. 87. BALLONPOST.
Austria, Michel 967, Cover
1951. 7. BALLONPOST. SALZBURG BALLON ZÜRICH 21.X.1951.
Austria, cancelled postal stationay
1983. 69. BALLONPOST.
Austria, Michel 1507, cancelled post card with stamp
1976. 55. BALLONPOST.
Austria, Michel 1522+, Cover
1976. 56. BALLONPOST.
Austria, cancelled post card with stamp
1982. 25. SONDER-BALLONPOSTFLUG.
Austria, Cover
1987. 78. BALLONPOSTFLUG.
Austria, cancelled post card with stamp
1956. ÖSTEREICHISCHE HIMALAYAGESELLSCHAFT. WIEN 16.1.56.