Depends on which model Beretta, and what condition it is in. A like-new Beretta 92 with adjustable sights might be worth $500. The same condition Beretta Cougar might be $350. If either of them are rusty or nicked or scratched, make it $250 or so.
Value depends on EXACT model and condition, but a pistol such as the Beretta Model 21 may be worth $125-200.
Seeing the Beretta was not widely used by the Allies in WWII, I would wager that it is now worth about 1300 dollars, strictly due to it's antiquity.
300 USD or so
7.65 is .32 ACP
A .25 cal Beretta is capable of inflicting a serious wound and even a deadly one.
AFAIK, Beretta has never made a handgun in that caliber.
Try e-gunparts.com
For a used one? Between $250 and $325, dependent on condition. If you're selling it to a gun store for them to resell it, you can expect considerably less - probably between $150 and $200.
75-200 USD
50-500 usd
380
75-200 USD