Vintage ball vase in flamed stoneware 1960 - caramel color with blue flow - signed DS

This superb vintage vase is made of glazed ceramic. It dates from the mid-20th century. Ball-shaped with an annular neck, it is decorated with an irregular covering of a pretty caramel brown with beige and bluish drips. It is a fine stoneware, with slight roughness and the enamel is velvety. This vase is signed "ds", I cannot identify the signature. Height: approximately 15 cm. This vase is in perfect condition.