Seller: number-one (383) 100%, Location: Los Angeles, California, Ships to: US, Item: 172415475436 This is a never used brass/steel twist type doorbell. The nickel plated bell shines like a mirror while the nickel plated steel base has a slightly duller finish. It is very rare to find an original bell over 120 years old in this condition. The bell has a patent date of August 1, 1993. The twist key and plate are made of brass and have a nice antiqued copper finish. The bell is 4" in diameter and the base is 4 4/4". The turn key plate is 4 1/2" by 2 3/4". The connecting rod, while not shown, is 2 1/2" and the bell should fit a door up to 2" thick. While some twist type bells have been reproduced they are nowhere near the quality of most originals. The originals always have an iron base which is more difficult to cast than the reproductions that are made of brass. The fit and function of the gears is also typically better on the originals. Most important is that an original is a real Antique which is probably the reason you are installing this type of bell.