Re: Mauser 765
Good pictures for identification purposes. You have a Mauser model 1914 pistol in 7.65 caliber, which is the same as .32 ACP, a cartridge which you can buy in any gun store. Some of these were issued by the German government to various military personnel, but yours lacks military markings, so it is a commercial pistol which was purchased privately. It may have been owned by a civilian or it may have been purchased by a military officer, as many officers purchased their own pistols. This pistol has a value of about $325. It's not really collectible, but it makes a nice reliable housegun.