Arne Jacobsen for Fritz Hansen office chair. This is a rare modern office or desk chair, model 3117, with the rare four-wheeled base. It was designed by Arne Jacobsen for Fritz Hansen. It is a first edition from the late 1950s to early 1960s and has the original upholstery. The height is adjustable. It is made of vinyl and chrome steel. The chrome base shows light signs of use appropriate to its age, but is in good condition.Undercarriage shows superficial oxidation