Set of 4 dining chairs in dark oak by ton, czechoslovakia 1960s

Beautiful mid-century set of dining chairs. Produced in 1960s by ton in dark oak wood and upholstered seats. The upholstery is not original but was changed into a lovely patterned grey velvet. Lovely details on the wood construction. Strong and stable, yet very elegant chairs. Excellent condition. Condition report: excellent condition. Additional dimensions information: seat hight 46cm.