1Bronze Doorknob Norwalk IDK-059October 2, 2015/in Interior Doorknobs Brass & Iron, Norwalk Lock Co./by adminVery nice cast bronze door knob embossed both sides in very good condition by Norwalk. Rosette shank opening is a little worn. Knob measures 2-1/4″ in diameter and takes a 1/4″ spindle.