Thank you for viewing. This is likely a Chinese antique, a sometsuke (blue and white) nazuna (shepherd's purse) pattern kumi-dashi (small teacup). Please understand that it is old porcelain. As seen in the first image, there are stains, common in old ceramics, next to the swirl pattern. Type... Pottery Type... Porcelain Type... Tea bowl Type... Tea bowl Type... Bowl Type... Small bowl