Nyasaland 1934 First Flight RANA Blantyre to Salisbury

NYASALAND: 1934 FIRST FLIGHT inauguration of the RANA weekly "feeder service" between Blantyre & Salisbury, connecting at Salisbury with Imperial Airways west & south bound flights. Souvenir envelope franked 1s5d clearly tied & dated Blantyre 8-8-34. Addressed to USA & showing first flight cachet in black. VF.