Ebonized and polished steamed, bent beech-wood. The chair was produced by Josef Heisler chair and wooden products company, Budapest in early 1930s. Ref. 100 Years of Hungarian Furniture by Jozsef Vadasz, 1992. The new house - modern villas of Lajos Kozma. Exhibition at the Museum of Applied Arts from November 24, 2006 to May 13, 2007. I have official proof of authenticity such as vintage catalogs, designer records, or other literature sources and take full responsibility for any authenticity issues arising from misattribution