Bibliography : Repertorio del design italiano 1950-2000 per l'arredamento domestico vol I Umberto Allemandi & co pag.121 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.