in october 1928 the manufacturer had staged a surprise at the motor show, presenting the "salmson type s" with a small 6-cylinder 9 cv engine incorporating, as on salmson's existing 4-cylinder engines, a twin overhead camshaft. from the outside the car could be distinguished from salmson's existing 4-cylinder cars only by the "six" logo in the centre of the front grill. the year before the great depression may not have been the best time for the manufacturer to push upmarket, and the "type s" did not sell in huge numbers. it nevertheless can be seen as a precursor to the salmson s4 that appeared (with a 4-cylinder engine) in 1932.