Black "Bikini" adjustable table lamp designed by Barbieri and Marianelli for Tronconi Milano, Italy, 1980s. On the bottom there are Tronconi's engraved label and the label "Pirelli & Co. Real Estate", as shown in the photos. 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.