NORTHERN RHODESIA BAROTSELAND AIRMAILS: 1939 Flight MONGU to MANKOYA. Cover franked KGVI 1½d tied despatch cds 2 JAN 1939 (incorrect date, should be 3 JAN) with arrival cds 3 JAN alongside. SIGNED BY PILOT H.R. KIRKMAN. Possible 20 covers existing. Pristine, very scarce.