A Brief History of the Marque
Manufacturer: Carl Metzger Motorradbau, Munich
These machines were assembled in small quantities using two-stroke engines of 110cc obtained from Munich-based Fritz Cockerell.
*A German post lists the engines as 269cc supplied by "Union-Zweitaktmotoren" which may refer to Auto Union. However, this seems unlikely as that company was not formed until 1932 after the onset of the great depression. DKW, a member of that group, made engines which somewhat fit the description and was at the time the world's largest motorcycle manufacturer. The same post gives an initial production date of 1920.
There is also an Italian CM marque, unrelated.
Sources: Wikipedia.nl, GTU Oldtimerservice
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