highly sought after original 19th century antique american oversized exterior residential entrance size doorknob designed and patented by j. lochner for the norwalk lock company, south norwalk ct. the drum-shaped ornamental cast bronze doorknob contains intricate leafage, rosettes and rope motifs. contains an oil-rubbed metallic bronze enameled finish used to accentuate the casting detail. measures approximately 2 1/2 inches in diameter.