Optima lamp series was designed in 1972 by Hans Due for Fog & Mørup. Optima desk lamp exists in several colours. Wall, pendant and floor lamps were also made. Hans Due also designed the Phister wall lamp and the Formel lamp series for F&M. This piece has an attribution mark, I am sure that it is completely authentic and take full responsibility for any authenticity issues arising from misattribution, European Plug (up to 250V).The wiring of this item may be original and might need replacement, if not specified otherwise.