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AUSTRIA - 1927-1937 AIR POST COVERS AND CARDS COLLECTION An interesting, Pre War collection of covers and cards bearing various 1925-20 Air Mail stamps, with the majority being First Flight items. Includes   1927 Wien - Dresden flight, 1927 Wien - Breslau, 1927 Wien - Berlin, 1928 Salzburg - Klagenfurt and Klagenfurt - Salzburg, 1928 Wien - Konstanz - Zurich, 1930 Wien - Munchen, 1930 Wien - Beograd, 1935 Vienna - London Imperial Airways, 1937 Zurich - Sion, 1937 Wien - Riga, 1937 Wien - Stockholm etc. Fine condition throughout (17 covers/cards).