Northern Rhodesia 1939 Barotseland Airmails Signed Flight Cover

NORTHERN RHODESIA: BAROTSELAND AIRMAILS: 1939 Flight LUSAKA - FORT JAMESON: Cover bearing KGVI 1½d tied Lusaka cds 3 JAN, Fort Jameson arrival cds 3 JAN on reverse. SIGNED BY PILOT, A H DOWNING. Apparently 40 covers carried of which only 6 pilot-signed. VF, rare. Ex Hudson.