fully functional c. 1890's original residential entrance door "ceylon" pattern stop work mortise lock. the ornamental faceplate is comprised of brass metal. the two button stops are generally used to make the exterior knob stationary, so accessibility from the outside requires a key. manufactured by the p. & f. corbin co., new britain, ct. the lock box is comprised of cast iron with black enameled finish. salvaged from a chicago graystone residence. measures approximately 6 x 1 1/4 x 3 1/2 inches