Bonjour Koric, c'est un Strombergshyttan, Suède, 'sharkstooth/dent de requin' vase
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Strömbergshyttan. Gerda and Edvard Stromberg established their own glassworks in 1933 on the site of an existing works, Lindefors Glassworks in Småland, Sweden. Gerda designed glass with very clean lines or with very simple geometric cuts. Very rigid forms pre-dominated. Eric, her son died in 1960 and Eric's widow Asta ran the factory until 1976. Gunnar Nylund, Rune Strand and Anders Solfors were amongst the designers during this period. However in 1973 the factory was destroyed and though it partially recovered it was bought out by Orrefors and eventually shut down in 1979. But now it is producing some art glass.