NORTHERN RHODESIA BAROTSELAND AIRMAILS: 1939 FIRST RETURN FLIGHT MONGU TO LUSAKA and thence overseas to England. Registered cover correctly franked KGVI 6d (2d & 4d registration) clearly tied despatch cds 2 JAN. On reverse additional despatch, arrival (4 JAN) and English registration marks. SIGNED BY PILOT, H.R. KIRKMAN. This is the ONLY registered cover recorded in the entire series of the Barotseland flights. Superb, rare.
