Original ph 4 1/2 - 3 1/2 table lamp in very good condition. poul henningsen designed the three-shade system as early as 1925-1926, when he collaborated with louis poulsen to create the first lamps for an exhibition in paris. Throughout his life, henningsen strove to create glare-free light, directing light where it is needed and producing soft shadows. Thus, henningsen designed not just a lamp, but an entire system, of which around a thousand different models have been produced over the years. The numbers of the ph lamps refer to the shade size. The ph 4 1/2-3 1/2 table lamp has a top shade of approximately 45 cm. It was introduced in its current form in 1990. i have official proof of authenticity such as vintage catalogs, designer records, or other literature sources and 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.