Air transport
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, Michel 870, Cover
1955. 14. BALLONPOST ERSTMALS IM FREIEN ÖSTERREICH SALZBURG 29.10.1954. + ZEHN JAHRE UN WIEN 101 26.10.1955.
Austria, Michel 1637, Cover
1980. 63. BALLONPOST.
Austria, Cover
1981. 23. SONDER-BALLONPOSTFLUG.
Austria, Cover
1989. 81. BALLONPOST.
Austria, Michel 1196, Cover
1965. 34. BALLONPOST.
Netherlands, Michel 214, Cover
1931. 75 + 40 + 7½ C. LUFTSCHIFF GRAF ZEPPELIN OSTSEEJAHR-RUNDFAHRT 1931 ROTTERDAM 8.V.31. + FRIEDRICHSHAFEN (BODENSEE) 12.5.31. to Cottbus, Deutschland.
Austria, Michel 1664, Cover
1981. 23. SONDERBALLONFLUG.
Austria, Michel 1026, cancelled postal stationay
1956. 16. BALLONPOST. LINZ BALLON OMO 20.10.1956.
Austria, Michel 1822, cancelled post card with stamp
1985. 74. BALLONPOST.
Austria, cancelled post card with stamp
1982. 25. SONDER-BALLONPOSTFLUG.
Austria, Michel 1525+, Cover
1976. 56. BALLONPOST.
Austria, cancelled postal stationay
1983. 69. BALLONPOST.
Austria, Michel 1528-1529, cancelled post card with stamp
1976. 56. BALLONPOST.
Belgium, Michel 732, cancelled post card with stamp
1946. NEDERLANDSCHE RUIMTEVAART STUDIO Poste lance par fusee en Belgique. Raketprovoflugo.__ OOSTENDE 15-3-46. Mars-Venus-Raket - Anno 1960?
Austria, cancelled post card with stamp
1989. 81. BALLONPOST.
Austria, Michel 895, Cover
1956. 15. BALLONPOST. JUNGFERNFAHRT DES ÖSTERR FREIBALLON OMO 29.4.56. + Besuchen Sie das heeresgeschitliche Museum Wien 21.3.58.
Austria, Michel 1146, Cover
1964. 31. BALLONPOST.
Iceland, Michel 147-149, Hinged
1931. Air Mail. Zeppelin. Set of 3
Scott C9-C11
Afa 147-149
Austria, Michel 1659, cancelled post card with stamp
1980. 64. BALLONPOST.