Knoll is an American company that manufactures office systems, seating, storage systems, tables, desks, textiles and accessories for the home, office and higher education. The company is the licensed manufacturer of furniture from an endless list of excellent furniture designers. The Diamond Chair by Harry Bertoia is one of the most significant designs produced by Knoll. This chair is an old original. Unlike the new chairs, it is not coated with plastic but lacquered.The armchair is in very good condition. However, vintage items may show some slight signs of wear such as unobtrusive scratches and other signs of time.