c. 1900's original and intact "new old stock" antique american interior residential sliding door mortise lock designed and fabricated by the p. & f. corbin co., new britain, ct. the fully functional mortise lock contains a lightly polished bronze faceplate with sliding handle, push button and "finger" lock. the original cast bronze key is included. the lock box is comprised of iron with intact baked black enameled finish. measures 7 1/2 1 x 4 1/4 inches.