Marking: (bottom of base, molded into plastic): Milano Artemide / Modello Patent Pending Lavinia / Design Masayuki Kurokawa / Made in Italy. (bottom of base, printed sticker): 220V (side of conical base above "on-off" switch, printed sticker): Artemide
David A. Hanks and Anne Hoy. Design for Living. Furniture and Lighting 1950–2000: The Liliane and David M. Stewart Collection. Ed. Martin Eidelberg. Paris, 2000, p. 187.