Small Diamond chair, model 421-1. Designed by Harry Bertoia (Italian, 1915–1978), upholstery designed by Antoinette Lackner Webster (Toni Prestini) (American, 1909–1998). Manufactured by Knoll Associates, Inc. United States, ca. 1957. Plastic-coated wire, cotton upholstery, foam rubber, 77.5 × 88.9 × 74.9 cm (30 1⁄2 in. × 35 in. × 29 1⁄2 in.). Cooper-Hewitt, National Design...