War mails 1915, stampless letter the evangelical missionary society for German East Africa Bethel by Bielefeld to the mission in Bungu D. O. A., censorship eagle cancel \"Censor passed German East Africa\", on route passing cancellation \"Dar es Salaam c\" and \"TANGA a\", as well arrival postmark \"USAMBARA (German East Africa) railway mail ZUG 1a\", in Maurui rated and with 15 Heller postage due allocated, very rare!