Model 431 was designed by Hans Bergstrom and originally produced by Atelje Lyktan. In the mid 1960s Atelje Lyktan was purchased by Philips, Sweden. This lamp was produced by Philips. Stamped logo and model number on the brass. It is in excellent museum condition. 240cm electrical cord. 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.