.Gustavsberg Pottery, from Sweden. This is from their Argenta line which was designed by Wilhelm Kage (1989 - 1960) and produced during the 1930's and 40's. Kage became a designer for Gustavsberg in 1917. The greenish glaze is signature to the Argenta line.
.My grandmother, from Horse Cave , KY, collected Argenta and recently my mom has added several pieces to her collection as well. The key is to find the larger pieces which are particuarily valuable.