A collaboration between Edward Hald at Orrefors Glassworks and Erik Tidstrand, Head of Nordic Companys Lamp Department, NK, in the year 1928. Rio brown glass shade and glass drops designed by Edward Hald. Nickel plated brass stem and metal details designed by Erik Tidstrand. Reference: "Hemmet och den moderna smaken i Sverige" by Nils G Wollin. A related ceiling lamp in picture 78, page 99.