Balthasar van der Ast, Still life with shells, circa 1640, oil on panel. Height: 30 cm (11.8 in). Width: 47 cm (18.5 in). 2173 (OK). 1942: bequeathed to Museum Boijmans Van Beuningen, Rotterdam, by Mr. and Mrs. Philips-van der Willigen. Museum Boijmans Van Beuningen