Wide Angle: The Collection of Robert and Barbara Horwitch 28 June 2018 Wide Angle: The Collection of Robert and Barbara Horwitch 210 210 Chinese Bi disc Bi disc jade 2½ h × 6 dia in (6 × 15 cm) estimate: $100–200 result: $250 own a similar item? free evaluation provenance: Collection of Robert and Barbara Horwitch, Glencoe, IL print
