lot of four original oil-rubbed metallic bronze enameled pressed ornamental steel antique american "como" pattern interior residential doorknobs designed and fabricated by the p. & f. corbin co., new britain, ct. the early 20th century wrought steel doorknobs with banded rims contain a series of beads in multiple configurations. each doorknob measure approximately 2 1/4 inches in diameter. priced for the lot. salvaged from a milwaukee foursquare residence.