Air transport
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
1989. 81. BALLONPOST.
Austria, Michel 1801, cancelled post card with stamp
1985. 30. SONDER-BALLONPOSTFLUG.
Austria, Cover
1986. 34. SONDER-BALLONPOSTFLUG.
Austria, Michel 1150, Cover
1964. 31. BALLONPOST.
Austria, Michel 1634, cancelled post card with stamp
1980. BALLONPOSTAUSSTELLUNG.
Austria, Michel 895+897, Cover
1956. 15. BALLONPOST. JUNGFERNFAHRT DES ÖSTERR FREIBALLON OMO 29.4.56. + 45 JAHRE PFSDFINDER ÖSTERREICH. 10 JAHRE PFADFINDER ÖSTERREICHS 23.IV.1956.
Austria, Michel 870, Cover
1955. 14. BALLONPOST ERSTMALS IM FREIEN ÖSTERREICH SALZBURG 29.10.1954. + 25 JAHRE BRIEFMARKENSAMMLERVEREIN WIEN 101 9.10.1955.
Austria, Cover
1989. 82. BALLONPOST.
Austria, Cover
1981. 66. BALLONPOST.
Austria, cancelled post card with stamp
1982. 25. SONDER-BALLONPOSTFLUG.
Austria, Cover
1986. 33. SONDER-BALLONPOST. 1. BALLONMAIL IN EIRE.
Austria, Michel 1196, cancelled post card with stamp
1965. 34. BALLONPOST.
Austria, Michel 1687, cancelled post card with stamp
1982. 25. SONDER-BALLONPOSTFLUG.
Austria, Cover
1990. 84. BALLONPOST.
Austria, Michel 1567, cancelled post card with stamp
1978. 59. BALLONPOST.