1Corbin Entry Doorknob Corbin-776September 4, 2022/in Corbin Hardware, Exterior Entry Bronze Doorknobs/by adminLarge entry size Corbin Doorknob M-13000 in the Newport pattern retaining some of the original silver patina. Knob is solid heavy cast bronze in nice condition measuring 2-1/2″ and takes a 3/8″ spindle.