Air transport
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 1695, cancelled post card with stamp
1982. 25. SONDER-BALLONPOSTFLUG.
Netherlands, Michel 469, Cover
1947. RAKET VLUCHT TBV PHIL. OH. PUNTEN NEDERLAND FRANKELIN D. ROOSEWELT HERDENKING NRS. ROCKET FLIGHT. 26.1.1947.
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.
Austria, Cover
1986. 34. SONDER-BALLONPOSTFLUG.
Austria, Michel 895 + 897, Cover
1956. 15. BALLONPOST. JUNGFERNFAHRT DES ÖSTERR FREIBALLON OMO 29.4.56. + Besuchen Sie das heeresgeschitliche Museum Wien 21.3.58.
Austria, Michel 1047, cancelled post card with stamp
1963. 30. BALLONPOST.
Yugoslavia, Michel 666-667, Cover
1951. Internationale Fallschiermspringer-Wettbewerb in Bled. FDC 16. VIII 1951 BLED. 6 + 50 DIN.
Austria, Michel 870, Cover
1955. 14. BALLONPOST ERSTMALS IM FREIEN ÖSTERREICH SALZBURG 29.10.1954. + WIEN 101 3. BUNDESKONGRESS WIEN 18.-22.10. 1955 18.10.1955.
Austria, cancelled post card with stamp
1988. 80. BALLONPOST.
Austria, Michel 1802, Cover
1985. 73. BALLONPOST.
Austria, Cover
1989. 81. BALLONPOST.
Austria, Michel 1715, cancelled post card with stamp
1982. 68. BALLONPOST.