1933 (29 AUG.) Round the World flight by Wolfgang von Gronau from Germany via Iceland, Canada, USA, Philippines, Dutch Indies, Ceylon and back to Germany, envelope dispatched from List (Sylt)/ Germany on July 21st and flown all around the world bearing stamps of USA, Canada, Japan, Philippines, Neth. Indies, Ceylon and India, handstamped on reverse at Friedrichshafen (10 Nov. 1932), very fine and scarce, cert. Bolaffi (Image)