The Surf Clam Door Knocker is cast in solid brass- Brass and bronze are copperbased alloys- The yellow brass alloy used in many of Michaels designs contains 70 copper and produces a warm, traditional brass look- Red bronze contains almost 85 copper- This additional copper content gives the bronze alloy its rich, reddish undertone- The mirrored finish of polished brass and polished bronze is achieved through varying degrees of sanding and buffing- Michael uses these techniques to highlight or accent the raised areas on a piece- Each Doorknocker is hand polished and then the knocker is then coated with a clear lacquer to protect the original polished finish- Michael Healy has signed this Surf Clarm Doorknocker in the mold, confirming its authenticity and quality craftsmanship-Specifications- Material Brass- Mounting screw center to center distance 2 18- Dimensions 5 H x 2-5 W x 7 L SKU: MCHD018
