Austria
Austria, Michel 1601, Cover
1979. 19. SONDERBALLONFLUG.
Austria, Michel 1918, Cover
1988. 36. SONDER-BALLONPOSTFLUG.
Austria, cancelled postal stationay
1955. 13. BALLONPOST. WIEN BALLON ZÜRICH 10.4.1955.
Austria, cancelled post card with stamp
1990. 83. BALLONPOST.
Austria, Michel 1554, Cover
1977. 58. BALLONPOST.
Austria, Cover
1915. BOSNIEN HERZEGOWINA. 45 KUK MILITÂR POST SARAJEVO 11.7.15. to Duisburg, Deutschland. Rec.
Austria, Cover
1918. KuK FELDPOSTAMT 295 7. 1. 18. k.k. Schützen-Rgt Nr. 17.
Austria, Michel 1732, Cover
1983. 69. BALLONPOST.
Austria, cancelled post card with stamp
1989. 39. SONDER-BALLONPOST. 1. BALLONPOST IN LITAUEN.
Austria, cancelled post card with stamp
1982. 25. SONDER-BALLONPOSTFLUG.
Austria, cancelled post card with stamp
1956. ÖSTEREICHISCHE HIMALAYAGESELLSCHAFT. WIEN 16.1.56.
Austria, Cover
1917. KuK FELDPOSTAMT 295 1. X. 17. k.k. Schützen-Rgt Nr. 17.
Austria, Michel 454, Mint never hinged
1925. 8 Pf.
Austria, Michel 1175, Cover
1964. 32. BALLONPOST.
Austria, Cover
1985. 32. SONDER-BALLONPOSTFLUG.
Austria, Michel 29-44U, Cancelled
1906. BOSNIEN HERZEGOWINA. Complete set with 16 stamps. IMPERFORATED.
Austria, cancelled post card with stamp
1989. 82. BALLONPOST.
Austria, cancelled post card with stamp
1978. 1. ÖSTERR. BALLONPOST-AUSSTELLUNG SALZBURG.
Austria, cancelled post card with stamp
1980. 64. BALLONPOST.
Austria, Cover
1986. 29. SONDER-BALLONPOST. 1. BALLONMAIL ON ANTIGUA.
Austria, Cover
1986. 34. SONDER-BALLONPOSTFLUG.