Production 1964 - mid 80s. The Nordisk Solar pendant lamp 376 exists in 3 sizes and several colours. 47.5, 55 and 70cm. In the 70s, the numbers changed to 74123, 74824 and 74407. In the 1980s, this pendant lamp was named Kastholm, after the designer. Ceramic bulb socket. Kastholm pendel model 41010. 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.