Jo Hammerborg designed the Central in 1967 and it was produced in four colour variations; the inner coating of the dark gray band could be white, blue, red or green, reflecting their respectively colour onto the cylinder shade. Hammerborg was hired as a chief designer at the lamp manufacturer Fog & Mørup in 1957, where he worked until 1980. 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, Up to 250V (Europe/UK Standard).The wiring of this item may be original and might need replacement, if not specified otherwise.