Sylvia Stave (1908-1994) contributed a pewter and ebony chessboard and an enamelled silver cask to the Stockholm Exhibition, 1930. 23 years old, Hallbergs, with a staff of some 600, promoted her to artistic director. During the 1930s, she submitted her designs to numerous exhibitions, receiving a series of favourable press reports from the critics. One of the most important was in Stockholm's NK department store, where she presented her creations alongside those of the established designers Folke Arström and Rolf Engströmer. She also exhibited abroad, in Chicago (1933), New York, London and Leipzig (1934), and Paris (1937). In contrast to the mass-produced items from Hallbergs, her designs centred on far more exclusive, avant-garde creations in silver and pewter, often in electroplated silver which was in fashion at the time. She was admitted to the École des Beaux Arts where she studied for the next two years. In 1939, on returning to Sweden, she contributed designs to Hallbergs for that year's collection. Many of her works are included in the permanent collection of Stochholm's National Museum.
