BAS-CONGO. BOMA. Action de F500. green, yellow. #6000. No 1040. Underprint of a charcoal drawing of an African railway scene, and an African. The company's railways operated in the area just north of the mouth of the Congo River: Boma to Tshela (140 km). The company often encountered financial difficulties and was finally taken over by the Government in 1919. By far the most attractive of all Congolese railroad certs.