Rago Auction - Visit 24 rooms designed around the Arco lamp by Achille Castiglioni and Pier Giacomo Castiglioni for FLOS. These are quite heavy, so to move this lamp you need to
Arco Lamp - DesignNJ
How Achille and Pier Giacomo Castiglioni's 1962 Arco Light Became a Living Room Essential | Architectural Digest