French rare Soyer sporty 350cc OHC with king shaft. Older but very nice restoration of an overhead camshaft Soyer with king shaft. Rarely offered, only a few of these motorcycles are known.

Soyer made motorcycles from 1920 to 1935. She used various built-in engine blocks such as Aubier-Dunne, Chaise, JAP and Sturmey-Archer. Until she built an overhead camshaft engine herself following the example of Charter- Lea in England. She achieved many successes with these models.