Yes- 7.65mm is the metric designation for .32 ACP (Automatic Colt Pistol) which is same as .32 Auto.
You will have to contact CZ
The resale value of a CZ 52 pistol would actually be highly dependent upon a number of factors. Some of these factors would include the age and condition of the pistol.
50-200 USD or so
100-500 USD
A little high.
It's a refinement of the CZ-50 military pistol from Czechoslovakia. It fires a .32 caliber cartridge.
50-200 depending on specifics
No sn data.
See the related links at the bottom.
Not listed in CZ catalog CZ-75's are available in 9mm Para. and .40S&W as well as the CZ-75 Kadet in .22LR. Variants/clones of the CZ-75 are available in many other calibers such as 10mm, .45ACP, and various European 9mm rounds.
CZ does not make a gun by this name. Find a reputable gun shop and have them check what type of pistol you actually have.