German early Zundapp model Z300. This is a rare 300cc 2 tact from 1928. From April 1, 1928 there was a new legislation in Germany that motorcycles up to 200cc did not have to pay taxes and no driving license was required. Because of this there are very many 200cc motorcycles sold in Germany and very few heavier ones. This is the reason that this 300cc is now a rare appearance. This is an older restoration that was never finished.
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