Air transport
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.
Austria, Cover
1983. 70. BALLONPOST.
Austria, Cover
1990. 83. BALLONPOST.
Austria, Michel 1508, Cover
1978. 30 JAHRE ÖSTERR. BALLONPOST.
Austria, Cover
1981. 65. BALLONPOST.
Austria, cancelled postal stationay
1952. 8. BALLONPOST. BREGENZ BALLON ZÜRICH 12.4.1952.
Austria, Michel 894-896, Cover
1956. 15. BALLONPOST. JUNGFERNFAHRT DES ÖSTERR FREIBALLON OMO 29.4.56. + ST. GABRIEL schutzpatron der post u der philatelisten WIEN briefmarken ausstellung 25 MÄRZ 1956.
Austria, Michel 955, cancelled post card with stamp
1951. 6. BALLONPOST. BALLONPOST VILLACH 25.3.1951.
Iceland, Michel 147-149, Hinged
1931. Air Mail. Zeppelin. Set of 3
Scott C9-C11
Afa 147-149
Austria, cancelled post card with stamp
1984. 72. BALLONPOST.
Iceland, Michel 148, Mint never hinged
1931. Air Mail. Zeppelin. 1 Kr. brown/blue King Christian X. Only 60.000 issued.
Scott C10
Afa 148
Austria, Michel 1801, cancelled post card with stamp
1985. 30. SONDER-BALLONPOSTFLUG.
Austria, Michel 1736, cancelled post card with stamp
1984. BALLONPOST-AUSSTELLUNG.
Austria, Michel 870, Cover
1956. 15. BALLONPOST. JUNGFERNFAHRT DES ÖSTERR FREIBALLON OMO 29.4.56. + ST. GABRIEL schutzpatron der post u der philatelisten WIEN briefmarken ausstellung 25 MÄRZ 1956.
Austria, Michel 1474, Cover
1975. 53. BALLONPOST.
Austria, Michel 1111, cancelled post card with stamp
1963. 30. BALLONPOST.
Netherlands, Michel 419+, Cover
1945. RAKET VLUCHT D'ETE GESTARTET PER 21 JUN. 1945 RAKET. ROCKET FLIGHT.
Austria, Michel 895+897, Cover
1956. 15. BALLONPOST. JUNGFERNFAHRT DES ÖSTERR FREIBALLON OMO 29.4.56. + ST. GABRIEL schutzpatron der post u der philatelisten WIEN briefmarken ausstellung 25 MÄRZ 1956.