Oxford Swivel Chairs by Arne Jacobsen for Fritz Hansen, 1960s, Set of 4

Nice set of 4 ‘Oxford’ swivel chairs designed by Arne Jacobsen in 1965 for the professors of St-Catherine’s college in Oxford. These examples are made of black leather and have the signature Jacobsen aluminum star-shaped base. In very good condition with minor traces of use as seen on the pictures. Produced in Denmark by Fritz Hansen in 2006 (labeled). 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