Josef Frank designed this lamp in the 1930s; It was carried out by J.T. Kalmar executed and sold by the house & garden. This is a execution from the 1950s. Very good original condition - shade was renewed. 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.