Swivel chair model 3117 based on the 3107 chair, designed by Arne Jacobsen in 1955. Produced by Fritz Hansen, Denmark in January 1965. Seating height adjustable from 44cm to 54cm. Seat in plywood, painted black (original finish). Solid back. Chromed base with casters in nice state. This piece has an attribution mark, I am sure that it is completely authentic and take full responsibility for any authenticity issues arising from misattribution