matching lot of four original salvaged chicago 1880's heavy cast brass "ceylon" pattern residential pocket door plates

group of four matching hard to find heavy cast brass "ceylon" pattern interior residential pocket door plates executed by p.f. corbin and company, new britain, ct. the salvaged chicago pocket door plates have a mostly uniform surface patina from one plate to the next. the set of matching escutcheons were used on a two-door configuration. priced for the lot. 

5.75 x 2.25 x 0.5 inches.