Vintage Cast Bronze Figural Deep Sea Diver Helmet Door Knocker Consign Now Dept20th Century Design, Collections, Decorative Arts, Maritime ArtsSize 6 in. x 4.5 in. Vintage Cast Bronze Figural Deep Sea Diver Helmet Door Knocker, hinged knock plate. 6 in. x 4.5 in. Please note that this auction has ended. Click here for an overview of this auction.