South Africa 1939 SAA West Coast First Sector Cape-Keetmanshoop

SA: 1939 SAA WEST COAST SERVICE: First scheduled flight Cape Town to Luanda, Angola: Envelope franked SA 1d clearly tied Cape Town cds 21 VIII 39 carried on the first sector to Keetmanshoop. Envelope also bears informative map of the service routing. On reverse Keetmanshoop arrival cds 21 VIII c39. This airmail service operated only three flights each way. Discontinued through lack of support and the advent of WWII. F-VF, scarce.