I picked up some family pistols and rifles this past week. I cant identify one of them, a 7.65 blowback semi-auto. There are very few markings on it. I believe one of my aunts used to carry this.
You have the, 3rd Wehrmachts-Variation (military-finish with E/37 acceptance mark and manual safety-lever;
Your load for this pistol is the 32 ACP (32 automatic).