The CHS was developped by Chausson during the German occupation. It was planned to be sold as a Chenard & Walcker. Three CHS were built, two with a 330 cc single cylinder engine, one with the 550 cc engine which should power the Chenard & Walcker van (later on becoming the Peugeot D3A van). The CHS was shown at the 1946 Paris Salon. In 1947 one of the prototypes was sold to Delaney-Gallay, who built radiators like Chausson. But it was impossible for Delaney-Gallay to obtain the necessary sheet metal, so no CHS were produced in Britain.