Published in: M. Romanelli, S. Severi, Gino Sarfatti: Selected Works 1938-1973, p. 434, Silvana Editore, 2012. 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.