British Airways BEA BOAC BSAA[ON RESERVE] Original vintage British airlines advertising poster BEA BOAC BSAA British European Overseas S American Airways featuring a stunning graphic design depicting a globe map with three stylised planes flying around it and leaving multicoloured vapour trails as circles pointing arrows to show the flight routes provided by the three British airline companies BEA British European Airways Corporation (1946 1974), BSAA British South American