Poul Henningsen (1894-1967)
PH 4/3 desk lamp with copper shades painted in red. Top of base is stamped "PATENTED." This lamp is early and was made when the patent was pending in 1926-28. Made by Louis Poulsen.
Literature: Light Years Ahead - the story of the PH Lamp - Gyldendal / Louis Poulsen p. 164 and similar model p. 147.