 Nyora kupfuurira kweiyi ndima - Sylvia Rosa Agneta Stave, zita rekuzvarwa Sylvia Gadd, 19081994 aive muSweden silversmith uye illustrator uyo aive achishanda kusvika 1940. Pashure pokuratidzira zvinobudirira pa 1930 Stockholm Exhibition, akagadzwa kuva muimbi anotungamirira pa, kambani hombe yezvishongo inoshandisa vanopfuura 600 vane fekitari muStockholm. Mumakore akatevera, akagamuchira ongororo dzakanaka dzezvinhu zvakaratidzwa muSweden nekune dzimwe nyika uye magadzirirwo ake ezvinhu zvezuva nezuva akagamuchirwa neHallbergs kugadzirwa kwemazhinji. Pashure pokuenda kuÉcole des Beaux-Arts muParis 19371939, akapa mabasa kuna Hallbergs kwenguva yokupedzisira. Muna 1940, akaroora chiremba wechiFrench René Agid ndokutamira kuParis, kwaakarega kugadzira. Mabasa ake mazhinji akabatanidzwa muunganidzwa wenguva dzose weStockholms National Museum. 