Would need to know which specific model. "Silver Hawk" has been applied to several different series of Beretta shotgun.
To determine the exact value of a Pietro Berretta double barrel shotgun a number of factors would actually need to be taken into consideration. Most importantly, the condition of the shotgun.
For Remington here are two big ones and there are more listed at the third address just search the page. Gunparts also might have the Beretta they carry everything. http://www.e-gunparts.com/ http://www.rollingblockparts.com http://remingtonsociety.com/rsa/service For Beretta, you might start with Cole Gunsmithing. They've specialized in Berettas for many years. http://www.colegun.com/
£ 500 All day long .
Sterling Silver Shotgun in DarkoviaForest
Shotgun Slade - 1959 Silver Queen 2-14 was released on: USA: 1961
Depends on what application it was ported for and by what process.
Probably $700 to $900
A 12 gauge boxlock, double barrel shotgun with 30" barrels, double triggers, and extractors. Blued with a silve finished receiver and a checkered walnut stock. Discontinued in 1967. Exc VG Good Fair Poor 500 450 375 250 150 serial number c26613 excellent condition
my Beretta is a 94 and it hood release is broke just the silver cable show ,,, i use needle nose pliers and pull it !
50-350 USD or so
Best left to a gunsmith