Kartell pendant lamp production in 1959, designed by Achille and Pier Giacomo Castiglioni, 4017 model (in Castiglioni site listed under the symbol "KD7") the diffuser is white opaline methacrylate which rests on an anodized aluminum body with sliding rail made of brass, to balance the ascent and descent of the diffuser measuring 35 cm in diameter and 25 cm in height, the only illuminated part rare example, production of the 50s and not a remake, in very good storage conditions, no damage, breakage or missing parts 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.