two matching 19th century interior residential refinished cast iron keystones salvaged from badly damaged faux marble slate mantels. each refinished cast iron fireplace mantel keystone contains a central opening housing a decorative majolica glazed tile made by the trent tile co., trenton, nj. the keystones were fabricated by c.b. evans & co., cincinnati, oh. priced for the pair. measures 11 x 6 3/4 x 3 inches.