Austria
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.
Austria, Michel 1247, cancelled post card with stamp
1967. 38. BALLONPOST.
Austria, Michel 1657, Cover
1981. 23. SONDERBALLONFLUG.
Austria, Cover
1992. 87. BALLONPOST.
Austria, Michel 1825, Cover
1985. 74. BALLONPOST.
Austria, Michel 1934, cancelled post card with stamp
1988. BALLONPOST WERBESHAU.
Austria, cancelled post card with stamp
1982. 67. BALLONPOST.
Austria, cancelled post card with stamp
1991. 86. BALLONPOST.
Austria, Michel 1508, Cover
1976. 55. BALLONPOST.
Austria, Michel 965, cancelled postal stationay
1951. 7. BALLONPOST. SALZBURG BALLON ZÜRICH 21.X.1951.
Austria, cancelled post card with stamp
1982. 25. SONDER-BALLONPOSTFLUG.
Austria, Michel 1530+, cancelled post card with stamp
1976. 56. BALLONPOST.
Austria, Michel 984, cancelled post card with stamp
1953. 2x 1 S. LUFTPOST FDC BREGENZ 29.9.53.
Austria, Michel 1695, cancelled post card with stamp
1982. 25. SONDER-BALLONPOSTFLUG.
Austria, Michel 870, Cover
1956. 15. BALLONPOST. JUNGFERNFAHRT DES ÖSTERR FREIBALLON OMO 29.4.56. + WIEN WIENER INTERNATIONALE FRÜNJAHRSMESSE 1956 MESSEPALAST 16. III. 56.
Austria, cancelled post card with stamp
1987. 77. BALLONPOSTFLUG.
Austria, Cover
1984. 72. BALLONPOST.
Austria, cancelled post card with stamp
1980. 63. BALLONPOST.
Austria, Michel 1184, Cover
1965. 7. SONDER-BALLONPOSTFLUG.