OTI armchair by Niels Gammelgaard for IKEA, 1980

Very beautiful tubular steel armchair designed by Danish designer Niels Gammelgaard, published by IKEA in the 1980s. An iconic design piece in the style of Harry Bertoia's work for Knoll, particularly the famous Diamond chair. Nice work on symmetry and geometry. Scandinavian design. The armchair is in good overall condition, with some welds redone but they are very minimally visible (see photos).