Austria
Austria, Michel 1604, cancelled post card with stamp
1979. 61. BALLONPOST.
Austria, Michel 1706, cancelled post card with stamp
1982. 67. BALLONPOST.
Austria, cancelled postal stationay
1986. 75. BALLONPOSTFLUG.
Austria, Michel 1909, Cover
1988. 79. BALLONPOST.
Austria, Michel 394, Mint never hinged
1923. 1600 Kr.
Austria, cancelled post card with stamp
1991. 86. BALLONPOST.
Austria, Cover
1916. KuK FELDPOSTAMT 295 13. X. 16.
Austria, Michel 1185, Cover
1965. 7. SONDER-BALLONPOSTFLUG.
Austria, cancelled postal stationay
1916. 5 CARTE POSTALE K.D.Feldpostexped. Der 2. Infanterie-Div. 13. 1. 16. to Seesen, Deutschland.
Austria, Michel 1685, cancelled post card with stamp
1982. 25. SONDER-BALLONPOSTFLUG.
Austria, cancelled post card with stamp
1987. 77. BALLONPOSTFLUG.
Austria, Michel 1129, Cover
1963. 29. BALLONPOST.
Austria, cancelled postal stationay
1984. 72. BALLONPOST.
Austria, Michel 395, Mint never hinged
1923. 2000 Kr. 4-block.
Austria, Michel 1084, Cover
1961. 25. BALLONPOST. SALZBURG 11. MAI 1961.
Austria, cancelled post card with stamp
1988. 80. BALLONPOST.
Austria, cancelled post card with stamp
1985. 30. SONDER-BALLONPOSTFLUG.
Austria, cancelled post card with stamp
1981. 66. BALLONPOST.
Austria, Cover
1980. 22. SONDER-BALLONPOST. 1. BALLON FLIGHT ON BARBUDA.
Austria, Michel 1580, cancelled post card with stamp
1978. 60. BALLONPOST.
Austria, cancelled post card with stamp
1956. ÖSTEREICHISCHE HIMALAYAGESELLSCHAFT. WIEN 16.1.56.