This is an Art Nouveau style early 20th-century modernist Wiener Werkstätte armchair by Josef Hoffmann. It has a solid walnut wood structure with original patina, with cast bronze plates, applied in the backrest and laterally in the arms. Reupholstered with original leather keeping the original springs in the seat. 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