Wiener Silber Fruit Bowl designed by Otto Prutscher in 1930 (Austria)Designed by Otto Prutscher in the 1930s. Wiener Silber products are made out of 940000 silver which is more valuable than sterling silver. The higher proportion of silver is an indication of both the maximum material worth of the silverware and its greater resistance to tarnishing. The entire collection, cutlery sets, tableware, tea sets, candlesticks, and above all, the custom items, are all handcrafted in Vienna, Austria.