Revenue stamps of Nyasaland and Malawi or airport tax. These were denominated wither in kwacha (MK) or US dollars (US$) for local or international flights. Revenue stamps of Nyasaland and Malawi Nyasaland, now known as Malawi, first issued revenue stamps as British Central Africa in 1891 and continued to do so until the late 1980s. British Central Africa first issued revenue stamps in 1891. These were revenue stamps of the British South Africa Company overprinted B.C.A. Later that year large designs bearing stamps of the British South Africa Company but in a large ornate border inscribed REVENUE B.C.A. were issued. The 2/6 to £10 values were
Nyasaland labour migration, mainly of men, to Southern Rhodesia and South Africa. The Nyasaland government estimated that 58,000 adult males were working outside Nyasaland in 1935, but the Southern Rhodesian census of 1931 alone recorded 54,000 male Nyasaland Africans there, so it was probably an underestimate. In 1937, it was estimated that over 90,000 adult males were migrant workers: of these a quarter was thought not to have been in touch with their families for more than five years. By 1945 almost 124,000 adult males and almost adult 9,500 females were known to be absent, excluded those not in touch with