Antique 1920s Siebe Gorman & Co. London 6 Bolt Diving Helmet Consign Now DeptCollections, Decorative Arts, Furniture/Decorative ArtsSizeHeight 18.5 in. Width 14 in. Depth 15.5 in. Antique 1920s Siebe Gorman & Co. London 6 Bolt Diving Helmet, bronze and copper construction, with riveted badge “Siebe Gorman & Co. Submarine Engineers London Patent” attached to front. Height 18.5 in. Width 14 in. Depth 15.5 in. Please note that this auction has ended. Click here for an overview of this auction.