1880s fully functional oversized american ornamental cast bronze interior residential swing arm sash lock

original highly desirable 19th century antique american victorian era interior residential window sash lock possibly fabricated by the hopkins & dickinson co., new york city, ny. the oversized swing-arm lock is comprised of bronze metal with a mostly uniform surface patina. the original "eagle claw" keeper or catch remain in great overall condition. only one available. 3-1/4" x 2-1/2".