South Africa - German East Africa. (Under Cover Mail). 1942. Air Mail envelope addressed to 'Box 117, Tanga, Tanganyika' bearing South Africa SG 101, 3d blue and SG 102, 6d orange (2) tied by Johannesburg date stamp with bilingual 'Opened by Censor' label tied by censor cachet. Scarce item of undercover mail into Tanganyika.