This is a Koishiwara-yaki teacup. A rare type with white glaze and tobi-kanna (flying-blade) decoration. No noticeable damage, and it's the perfect size for a rice bowl or teacup. "Koishiwara Pottery" is written on the bottom. Diameter: 12.5cm, Height: 6.3cm --- Please take this opportunity to acquire it. I have many other items for sale. #AntiqueSale Bundle discounts are welcome, and you can get a little cheaper.