Motorcycles branded BJS were manufactured by M. Bogey of 57 Boulevard de Grenelle, Paris, from c.1926 to 1935. B.J.S. are thought to have used frames built by Gam of St Etienne.
Bogey, also advertised a 3CV two-stroke with the name Motorbony-x.
Sources: OTTW, period advertising, et al.
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