'Sigma' Wall or Ceiling Lights by Sergio Mazza for Artemide. Designed and manufactured in Italy, circa 1960s. Patinated nickel plated brass, holophane glass. Custom back plates. Rewired for U.S. standards. We recommend three E27 max. 40W bulbs per sconce. Priced and sold individually.Please Note: This listing contains two units in polished brass and two units in satin nickel. Both aged and all sold individually.