all original 19th century american antique ornamental cast brass doorknob escutcheons or backplates designed and fabricated by the p. & f. corbin co., new britain, ct. the matching interior residential doorknob backplates contains rounded edges accentuated with grooves. the doorknob escutcheon on the right retains a partially intact nickel-plated finish. the protruding thimbles or collars are original and intact. measure approximately 7 3/4 x 2 inches. priced for the pair.