This is a beautiful souvenir sheet, issued by Guinea-Bissau in 2009, honoring Australian Presbyterian minister & aviator John Flynn. Also honored are the world's first air ambulance, founded by Flynn, the Royal Flying Doctor Service, along with the Red Cross. Featured emergency aircrafts shown include the County Air Ambulance Eurocopter 135 T-1G-WMAS, Surrey/Sussex air ambulance helicopter G-KSSH, S-76C Search And Rescue Helicopter, and the Eurocopter EC 135 G-HWAA Midlands Air Ambulance. The sheet is Post Office fresh, mint never hinged, and F/VF.