Illuminazione, Quaderni Fontana Arte, n. 1, p. 18 - Illuminazione, Quaderni Fontana Arte, n. 6, p. 16 - F. De Boni, Fontana Arte. Gio Ponti, Pietro Chiesa, Max Ingrand, Allemandi, Torino 2012, tav. 312 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, Up to 250V (Europe/UK Standard).The wiring of this item may be original and might need replacement, if not specified otherwise.