This chair was used by Fritz Nagl for the interior at the Wiener Ärzteklub (Vienna Doktors Club) in 1913, and therefore mistakenly attributed to Nagl. It is in fact a design by Josef Hoffmann for J&J Kohn, in about1910. Vera Behal, Moebel des Jugendstils S 141, Moderne Bauformen, 1913, Bd XII, S 165 - - Signature on the bottom of the seat.