Home Product Tag Dübendorf International Aviation Meeting Zurich 1927 Otto Baumberger,1927 SOLD Zurich International Aero Meeting 1932 Otto Baumberger,1932 SOLD IV. International Aviation Meeting Zurich Otto Baumberger,1937 SOLD 4th International Aviation Meeting Zurich 1937 Otto Baumberger,1937 SOLD Dübendorf 25 Years of Swiss Military Airplanes Otto Baumberger,1939 Swiss Air Force Museum Dubendorf Peter Marti,1988 More