This bar stool "Swing" was designed in 1982 by Jutta and Herbert Ohl for Rosenthal. It is made of black powder -coated metal. Because of its construction, the seat feels like a freezer. The bar stool is in a very good vintage state. This piece is attributed to the mentioned designer/maker. It has no attribution mark and no official proof of authenticity, however it is well documented in design history. I take full responsibility for any authenticity issues arising from misattribution