This clock measures about 30 across. It is in nice shape, and the clock works well. I do not believe that the motor/mechanism on the back of the clock is original. It runs on a AA battery.The item "Elgin Atomic Starburst Mid Century Retro Walnut Wall Clock" is in sale since Monday, September 2, 2019. This item is in the category "Collectibles\Clocks\Vintage (1930-69)\Wall". The seller is "pghthngs" and is located in Natrona Heights, Pennsylvania. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Egypt, Sri lanka, Paraguay, Uruguay, Russian federation.