1Circa 1879 Bronze Door Knob Hopkins & Dickinson HD-100January 4, 2017/in Recently Sold Hardware Past Sales/by adminRare large heavy cast bronze door knob in nice condition for the age , found in the 1879 Hopkins & Dickinson catalog knob # 406, measures 2-1/2″ in diameter. Knob takes a 1/4″ spindle.