Seller: ironage (3,830) 100%, Location: Orefield, Pennsylvania, Ships to: US & many other countries, Item: 351705502449 Patent 1858 J. Barton Antique Doorbell Servant Call Bell - Works with a Sweet Ring!!! The bell measures 4" in diameter. The mounting holes measure 4 7/8" center to center. Great old bell for the collection or to hang and use. Check out photos.