This is a small, underglaze blue and white Imari ware dish with a takokarakusa (octopus arabesque) design. This is one of the smallest class of small dishes, with a diameter of 6cm. The takokarakusa, pine, bamboo, and plum are drawn with lines less than 1 millimeter thick. The fact that the back is also carefully painted is a nice feature. What is the double square mark inside the foot ring? I can't read it. I use it to hold things like kaki-pi (Japanese rice cracker mix) or dried foods. The size is on the left in image 2, approximately 6.1cm in diameter x 0.9cm in height. The small dish on the right has a tiny chip.