The Hans Due Optima pendant lamp exists in 3 versions- Optima 5, 6 and 7 in 20cm, 50cm and 60cm respectively. Made in several colours. This one is the smallest version. 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.