Impossible to answer without a DETAILED description of ALL markings, barrel length, sights, caliber, accessories, box, papers, etc..
Several German pistols used the 7.65mm cartridge. The Walther PP & PPK, the Mauser Hsc are just a couple of them.
The 7.65mm Mauser rifle is MORE than adequate for deer hunting- IF a soft point hunting cartridge is used. Full metal jacket military ammo should not be used for hunting.
20-200 USD or so
Model 765 was in production from 1948 - '52.
$175 if in good condition
.32 caliber
Possible.
50-100 or so
Try these websites ......WWW.cheaperthandirt.com.......WWW.gunsamerican.com
50-100 or so
$100