Size: Diameter: Approximately 12.3cm Height: Approximately 7.5cm Marked "Koshi" on the back. Based on my research, it appears to be a work by Koshi Takenaka? Please refer to the images for details as I don't have further information. The bowl depicts Daruma figures supporting each other. I believe the box was titled "Sasaeai Chawan" (Supporting Each Other Tea Bowl). (The box was in poor condition and has been discarded.) There is some soiling due to aging. Please check the images for the detailed condition. Please understand that this is a long-term storage item before purchasing. Matcha bowl, tea ceremony utensils, good luck item.