Vintage table lamp designed by Herbert Proft for Glashutte Limburg in Germany in the 70s. Model 'Bulb' , made from a single piece of mouthblown glass, and the largest size of this series of lamps. 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, European Plug (up to 250V).The wiring of this item may be original and might need replacement, if not specified otherwise.