My father has given me his 12 gauge double barrel shotgun, made in Eibar Spain by Victor Sarasqueta, I think made specifically for my father. He is the only owner of this gun. I'm wondering what it might be worth. It is a side-by-side, double triggers, sidelock, but only in good condition. Lots of engraving on the metal, a hunting scene, pistol grip and checkering on the wood. Recoil pad that I believe was original. No alterations have been made. Anybody able to tell me more? Thanks for your time.