Diamond lounge armchairs by Harry Bertoia for Knoll

Set of four large diamond lounge chairs by Harry Bertoia for Knoll. All four with original knoll fabric cover which can be removed. Design: Harry Bertoia. Manufacturer: Knoll. Period: design is from 1950 these are from the early 90. Model: 422 large diamond. Material: metal, upholstery. Dimensions: h 70 X w113 X d 80 X seat 40 cm. Condition: good, all chairs has signs of use, damage on the corners of the covers, or slight stains on the fabric (see detailed pictures). One of four is marked, but all chairs came out the same office.