What ammuntion is used in a 1935 sacm pistol?

It's a French pistol, which uses a proprietary cartridge known as the 7.65 Longue (also known as the 7.65x20mm and 7.65 MAS). It DOES NOT have any compatibility with the 7.65x17SR/.32 ACP cartridge, and you should not attempt to fire the .32 ammo in that pistol.