Josef Hoffmann / Johann Souval (maker) / Wiener Werkstaette brooch, Blue and white champlevé enamel on gilt copper, marked, c. 1910 (see original drawing from the MAK / Wiener Werkstaette Archive in Vienna below)
Josef Hoffmann / Johann Souval (maker) / Wiener Werkstaette brooch, Blue and white champlevé enamel on gilt copper, marked, c. 1910 (see original drawing from the MAK / Wiener Werkstaette Archive in Vienna below)