Pair of space age Op-art wall lights by Egon Hillebrand for Hillebrand Germany 1970s

Very rare pair of space age optical art wall lights/sconces by egon hillebrand for hillebrand lighting (germany, 1970s). Each light consists of three superposed orange metal rectangular layers with a white metal square on the top. Can be hung/used both vertically and horizontally. They spread the light beautifully (see pictures). High quality craftsmanship. Cleaned, well-wired and ready to use (compatible in europe, uk, us, etc.). Each requires one small e14 light bulb. Led compatible. Width: 21 cm; height: 10.5 cm; depth: 6 cm. Very good vintage condition. Light wear consistent with age and use, some scratches. The listed price is for the pair (two wall lights).