There are no markings as to the. The light is a deep brown metal. The metal has pitted from age. The patina adds character to the. There is an on-off switch.18 1/4 across the light cover. Check out my other items. The item "Vintage Fluorescent Desk Light Lamp" is in sale since Tuesday, October 2, 2018. This item is in the category "Collectibles\Lamps, Lighting\Lamps\ Electric\Table Lamps". The seller is "the-swap-shop" and is located in Deerfield Beach, Florida. 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, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Bahamas.