'Mars' motorcycle by Claus Franzenberg, design of 1920 , year of construction 1926, manufacturer: Mars-Werke, Nuremberg.

The big flat-twin engine was supplied by Maybach and there was a two-speed gearbox and leg guards. German inflation killed it, but Mars was revived as MA with a variety of bought-in engines, concentrating in the 1930's on Sachs-powered mopeds an...
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