This gorgeous set of door hardware is the Chatham pattern by Russwin (the Russell & Erwin Mfg. Company out of New Britain, Connecticut). The pieces are copper-plated. The set consists of two door knobs and a spindle, two back plates, and a mortise lock with a strike plate. The heavy cast back plates are 8 3/4 inches long and 2 1/2 inches wide. The distance from door knob center to key hole center is 2 1/8 inches. The 2 1/4 inch door knobs are also heavy cast with a copper plating. This Victorian era set will definitely make a statement and attract a great deal of attention in your home.