GROUP OF 20 WORLDWIDE AIR POSTAL HISTORY ITEMS: 1927-39, 9 from US, including 5 covers commemorating Pioneer Flights under new rates of 5c (1928), in addition US Air Mail Map produced by Colonial Western Airways, Inc., First Flight items of Belgium, Brazil, Costa Rica, Danzig, Egypt, France, three SCADTA Flights and etc., minor flaws possible, mainly VF, Est. $250-$300 (Image)