Motorenfabrik Conrad Weiss, Holzstraße 49. München, production 1923-1932.
Built motorcycles and commercial three-wheelers using engines of 150cc to 500cc often with a Hurth 2-speed gearbox, and in the early 1930s built a light motorcycle powered by a 74cc Sachs engine.
Very interesting post related to the Weiss marque: conrad-weiss-tricycle.
Sources: OTTW, autopuzzles.com
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