four matching original early 20th century american antique ornamental stamped steel doorknob backplates or escutcheons possibly fabricated by penn or the reading hardware company. the lot of embossed steel backplates exhibit a worn and weathered copper-plated finish. each backplate contains a single wrought steel thimble, single keyhole opening and four screw holes for mounting purposes. measure approximately 8 x 2 1/2 inches. priced for the lot. two matching lots available.