This is a very large adjustable lamp with adjusting mechanism in the middle so it can be used in several positions as  ceiling lamp in many different positions, multi-functional. The shade can swivel to the left or right too. This lamp is  because of its monumental size it’s a really spectacular lamp. 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.