Otto prutscher designed this lamp for the 1925 exposition internationale des arts décoratifs et industriels modernes in paris. it was manufactured by the viennese bronze foundry melzer & neuhardt. solid cast bronze; silk shade. Renewed electrification. it was exhibited in the pavilion designed by josef hoffmann. apparently, prutscher was awarded a gold medal for the design – he recorded this in his cv, and it is also mentioned in a congratulatory letter from the vienna arts and crafts association dated november 6, 1925. references: hermi & fritz schedlmyer, otto prutscher, architect and designer between tradition and modernity, volume 1; p. 334, note 176. the original photograph with the corresponding is kept in the archives of the vienna museum of applied arts (mak) (inv. Number ki 10147 - 73). 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.