Wiener Silber Manufactur has a special recipe for its sterling silver that includes 94% of silver, which is higher than the usual 92.5. As a result, this bonbonniere has a deeper lustre with a lower likelihood of clouding and a slower tarnishing rate. It was designed by Austrian architect Otto Prutscher in the 1920s and features a lidded top, a slender eight-shafted column, four mid-height wings and a spaceship-like foot.