Other Pietro Beretta 12 gauge rap special shotguns have sold in auction anywhere in the range of $350 USD up to around $500 USD. You could expect more from a private sale or auction of this item, as a gun shop would purchase it for roughly half of its appraised value.
You will find more info on the weapon your refering to if you search Beretta TR-1
Contact Beretta Customer Service through their website. You will need model and serial number.
The M9 is made by Fabbrica d'Armi Pietro Beretta - the Beretta corporation. It's an Italian company.
value of a beretta model 413
Impossible to answer without a detailed description to include the serial number.
50-300 usd
About $500, depending on condition.
50-150 USD
50-500 uSD
About $400-$500.
100-400 USD
AFAIK, Beretta has never made a handgun in that caliber.