Model 420. Round steel and iron lattice, chrome-plated and blue fabric. Organically shaped seat shell made of wire mesh on a frame made of thin, curved round bars. Unupholstered; possibly by Harry Bertoia, 1952. Height 75 cm. 53 cm x 48 cm seat height 45 cm. A vintage wire side chair by Harry Bertoia. Knoll International. 2nd half 20th century.