It depends on which gun.
Contact Beretta
You will have to call Beretta to find out.
Without a detailed description of the handgun, nothing.
A good handgun.
$350
You will have to call Beretta. No way to id a weapon from just the maker and sn as a rule.
You will need to call Beretta. No published data that includes that number.
AFAIK, Beretta has never made a handgun in that caliber.
75-250 USD
There's the Beretta Cougar, which is a semi automatic handgun...
Beretta model 92. It is a 9mm cal.
100-1000 USD depending on EXACTLY what you have.