Rare Viennese bistro chair curved wood 1900

Curved wooden chair of austrian manufacture by one of the viennese manufacturers kohn wien, thonet or fischel without visible marking, early twentieth century. Chair more than a hundred years old in perfect condition! Original black patina with friction and lack of paint. The cannage is perfectly tense... Dimensions: height 87 cm - max width 39 cm seat height 47 cm.