Earthenware ball vase in white with bright blue, vintage

A special earthenware ball vase with circles with a bright blue glaze underneath. Well, how do you  describe this handmade ball vase? Sometimes its hard to give it a good name. The handmade ball vase is not signed. The vintage ball vase is beautiful as a freestanding object on the table or in a group with other ball vases in the same color combinations and also great as a flower vase! The vintage earthenware ball vase in white cream with the bright blue glaze under layer is in good condition.