Lot 66610 – 1932 (Jan.) Field Imperial Airways flight envelopes

1932 (Jan.) Field Imperial Airways flight envelopes (4), one from Juba to Mbeya, Tanganyika and three from Malakal to Mbeya, Johannesburg and Victoria West, two with manuscript « Unknown return to sender », and 1935 Africa Orientale envelope from Khartoum to Berbera, Somaliland; a scarce group; also a selection of commercial flight envelopes (12) to a variety of destinations and illustrating a range of frankings (17).