The Altena was a Dutch motorcycle and automobile made by NV Haarlemsche Automobiel & Motorrijwielfabriek, based in Haarlem-Heemstede from 1900 to 1906. The first car built was powered by a 3.5 hp De Dion single-cylinder powerplant. From 1905 models having 8, 10, and 12 hp engines were offered. The company was declared bankrupt in 1906 but a few cars were advertised into 1907. It is estimated that some 40 or 50 cars were made. Literature Harald H. Linz, Halwart Schrader: The big automobile Encyclopedia , BLV, München 1986, . G. N. Georgano: cars. Encyclopédie complète. 1885 à nos jours. Courtille, 1975 (French) G. Marshall Naul, "Altena", in G.N. Georgano, ed., The Complete Encyclopedia of Motorcars 1885-1968 (New York: E.P. Dutton and Co., 1974), pp. 38. Links GTÜ Society for Technical Supervision mbH (accessed on 22 December 2013) Google Übersetzer für Unternehmen:Translator ToolkitWebsite-Übersetzergoogle Über Google ÜbersetzerCommunityMobilÜber GoogleDatenschutzerklärung & Nut Car manufacturers of the Netherlands Motorcycle manufacturers of the Netherlands Dutch companies established in 1900 Vehicle manufacturing companies established in 1900