Depends on when it was made.
Depending on EXACTLY what you have, a few hundred to multiple thousands of USD.
Several German pistols used the 7.65mm cartridge. The Walther PP & PPK, the Mauser Hsc are just a couple of them.
www.gunboards.com
3.4% of 765= 3.4% * 765= 0.034 * 765= 26.01
* 47933 Crawfordsville 765 * 47934 Crawfordsville 765 * 47935 Crawfordsville 765 * 47936 Crawfordsville 765 * 47937 Crawfordsville 765 * 47938 Crawfordsville 765 * 47939 Crawfordsville 765
50-500 depending on specifics
382.5= 50%/100% * 765= 50/100 * 765= 0.5 * 765= 382.5
765
765 g equals .765 kgs
17 = 765 / 45
pi * 765 = approx. 2,403.3183799961918274239221882088