overglazed mark WW, blue underglazed mark PL since 1918 till 1941, no. 1167/36, Bohemia, Ostrov nad Ohří, design J. Hoffamnn circa 1910, production Pfeiffer & Löwenstein Co., wide cup, hand painted motifs of birds, height
Lit.: Noever Peter (Ed.): Josef Hoffmann designs. Prestel, München 1992, pg. 260; Barbara C. Buenger, Catalogue – Design, Vienna, 1890s to 1930s, Elvehjem Museum of Art, 2003, pg. 69.