Obsessed,
I have a Boswell BL 12-b 3" gun with 32" barrels (M/F)and weighs 8 pounds. The rib is file-cut, has two ivory beads and a safety. The proof is for 1 1/2 loads. The Boswell ledger page (dated 12-15-1922) describes it as a "12 Bore A&D 3" pigeon gun."
Steve