1938 Motobécane Motor Block Type S 493.1cc
Type S - 493.1 cc
Motobécane was a French manufacturer of bicycles, mopeds, motorcycles, and other small vehicles, established in 1923. "Motobécane" is a compound of "moto", slang for motorcycle; "bécane" is slang for "bike."
In 1981, Motobécane filed for bankruptcy and was purchased by Yamaha and reformed in 1984 as MBK (pronounced "emm bay kah"); the French company continues to make motorscooters.
It has no relation to Motobecane USA, which imports bicycles from Taiwan manufactured to their specification by Kinesis Industry Co. Ltd. under the Motobécane trademark.