South Africa 1918 Wanderer's First Demonstration Flight

SA: 1918 "Make your 6d fly". Small Wings FIRST DEMONSTRATION (WANDERERS) FLIGHT card with KGV ½d tied cds 20.NOV, the ½d paying inland postage to local addressee. Dark blue on red printing. Message side reads: "Keep this P.C. It will be a curiousity later on..." VF example, a scarce flight card.