The Hospitality Pineapple Door Knocker is cast in Solid Brass and designed by Michael Healy, an accomplished Rhode Island artisan. Brass and bronze are copper-based alloys. The yellow brass alloy used in many of Michael"s designs contains 70-percent copper and produces a warm, traditional brass look. Red bronze contains almost 85-percent 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. The Pineapple is a traditional symbol of abundant hospitality, making it an ideal image for your home"s front door.