Brass Whale Fluke Door Knocker Consign Now DeptFurniture/Decorative ArtsSize4 ½ in. x 3 ¼ in. Brass Whale Fluke Door Knocker, mounted on mahogany oval plaque 4 ½ in. x 3 ¼ in. Please note that this auction has ended. Click here for an overview of this auction.