Beautiful ceiling lamp, well-known model that needs no introduction. Big Delta, design Sergio Mazza, produced by Artemide in the 1960s. It received an honourable mention in the 1960 "Compasso d'Oro" competition. Made of chrome-plated metal, diffuser in opaline glass. This piece is attributed to the mentioned designer/maker. It has no attribution mark and no official proof of authenticity, however it is well documented in design history. I 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.