underglaz mark Wahliss, overglaz mark Entw(urf). Prof. Otto Prutscher, Austria-Hungary, Trnovany u Teplic, designed by Otto Prutscher circa 1909/10, produced Ernst Wahliss, porcelain, two sizes, small mokka cup and bigger tea cup, decorated with black line, h. 5,5 cm and 6,3 cm, min. chips Lit.: Boeckl Matthias, Koller Gabriele, Patka Erika: Otto Prutscher 1880-1949. Hochschule für angewandte Kunst in Wien, Wien 997, pg. 66.