Possible.
Model 765 was in production from 1948 - '52.
.32 caliber
No one that I've heard of. Now, a 7.65mm bullet is a different story. Numerous makers of ammunition and components for reloading are out there. Do an internet search.
Impossible to answer without a DETAILED description of ALL markings, barrel length, sights, caliber, accessories, box, papers, etc..
3.4% of 765= 3.4% * 765= 0.034 * 765= 26.01
Its positional place value is 700 = seven hundred
Several German pistols used the 7.65mm cartridge. The Walther PP & PPK, the Mauser Hsc are just a couple of them.
* 47933 Crawfordsville 765 * 47934 Crawfordsville 765 * 47935 Crawfordsville 765 * 47936 Crawfordsville 765 * 47937 Crawfordsville 765 * 47938 Crawfordsville 765 * 47939 Crawfordsville 765
382.5= 50%/100% * 765= 50/100 * 765= 0.5 * 765= 382.5
765
765 g equals .765 kgs