Single only Hard to find original 1920s - 1930s black porcelain wall sconces. Internal pull switch mechanism has been totally disassembled, all contact points and moving parts have been cleaned and polished, then re-built and tested. This insures decades of a properly working, safe switch. Although wall switches have replaced the need for the internal pull switch, it is a nice feature to have them working safely and properly. Height: 7 1/2 inches Width: 3 7/8 inches Projection: 4 inches w/o bulb