Antique rotary or twist door bell in brass, circa 1895. Mounts directly through an exterior door with the turn handle on the outside and the bell mounted inside. Bell turn is in ornate cast rose bronze and measures 4 1/4" high by 1 1/2" wide and plain turn extends 1" and is 1 1/2" across. The operating key or stem extends 2 1/4" from the back of the plate. Mechanical rotary bell is bronze on a cast iron base and is 3 1/2" in diameter and stands proud 1 1/2". Bell rings with a continuous ring as long as the handle is turned and can be heard throughout the house. Complete and restored to working order, Adjustable to any door thickness. Comes with mounting screws.