This was a the French Secondary Service Pistol, it was intened to supplement the M1935 A in French Army Service. Both pistols where designed around the 7.65 or 32 French long cartridge. Which it self was developed form the French Armys experience in the Great War.
It is rather odd that The French Army would bother to go through the trouble of designing two completely independent and totally different pistol with no common parts. When at around the same time FN introduced the now famous P1935 Browning Hi Power and Radom introduced the Viz 1935 both in 9mm Luger.
Odd French Army thinking aside, the M1935 S is a handy little gun. It is thin. well balanced, and is easy to point. The 32 French long cartridge makes it easy to shoot and punches about as hard as 9mm Makarov.
Over all an interesting piece of history and a side note alot of this pistol are usually beat to hell. Or at least most if the ones I have ever seen. Not hard to imagine when you consider that most probably was service through out WW2, into Indo China, and Algeria.