Danish Fibonacci Pendant Lamp by Sophus Frandsen for Fog & Mørup, 1960s The Fibonacci design impresses with its high-quality materials, a well-thought-out lighting concept, and a height-adjustable E27 socket to change the lighting effect. Essentially, the Fibonacci lamp is a masterpiece of lighting design and was among the most expensive pendant lamps produced by Fog & Mørup in the 1960s. I have official proof of authenticity such as vintage catalogs, designer records, or other literature sources and take full responsibility for any authenticity issues arising from misattribution, Up to 250V (Europe/UK Standard).The wiring of this item may be original and might need replacement, if not specified otherwise.