Celadon Crackle Sake Cup / Guinomu (small sake cup) With wooden box Size: Diameter: Approximately 7.5cm Height: Approximately 4.5cm Unused, found at my parents' house. I have no knowledge of this item, so I cannot answer any questions. Regarding Toshio Furukawa, quoted from the following site: A ceramic artist from Kiyomizu-yaki, Kyoto. He produced at Risou-gama and is known for techniques such as the "platinum foil underglaze" technique, which his son, Takuro Furukawa, perfected. This item is from a private home and has been stored by a non-professional, so please understand this before purchasing. Antique Pottery