Hello Jeffington. Quite heavy to say which designer, Stromberg never signed with designer. B only says it is a Vase and the number tells you something about the year. 1954 the last Vase number was 642 1962 the number 974, so the 8xx must be something about 1960 . In that Time Gunnar and Asta both worked as designer. Gunnar left round about 1965 Stromberg. Maybe somebody knows more, so far I can‘t help🙁🎄