A Brief History of the Marque
Manufacturer: Biebrich am Rhein. 1924-1927
Prior to 1924 the company had been active producing equipment for the Swiss railways. In 1924 they began building motorcycles which included one powered by their own engine, Sturmey-Archer three speed gearbox, Brown & Barlow carburettor, and Komet front brake. It was belt-driven and the frame was also of their own manufacture. One source states that they used JAP 300cc engines.
After 1930, they built only sidecars.
Sources: GTU Oldtimerservice
October 30, 2001
I have a copy of a German Harso Prospect -- Bmwkalli at aol dot com
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