This was given to me by an acquaintance several years ago. It's a Karatsu-yaki (Karatsu ware) confectionary bowl made by the third-generation Kinsaku. Although it hasn't been used, there's a small scratch on the rim if you look closely. The fourth photo shows it. The dimensions are: diameter 21.2 cm, height 6.5 cm, base 10.3 cm. Thank you.