There are 3 sockets that work independently. The marble base is approximately 5 1/2 inches wide by 6 1/2 inches tall and in very nice condition. The chrome is very nice, the marble is very nice - the corners show age wear.The shade has a dimple in one spot which isn't noticeable unless you are looking for it. The shade is approximately 16 across. The item "Laurel Lucite Mushroom Shade Desk Side Floor Lamp Marble Base Mid Century Mod" is in sale since Thursday, July 4, 2019. This item is in the category "Antiques\Periods & Styles\Mid-Century Modernism". The seller is "ebabestreasures" and is located in Jacksonville, Florida. This item can be shipped to United States.