All pieces except knife with impressed marks: [WW, 900] and artist's cipher [JH] and Vienna hallmark.
Josef Hoffmann Designs, MAK-Austrian Museum of Applied Arts, Vienna, Noever, pg. 82, fig. 114 illustrates the original drawing for this service
Josef Hoffmann Bestecke Fur Die Wiener Werkstatte, Neuwirth, ppg. 249-273