I don't know the kiln or the artist, but this is a black glazed matcha tea bowl with a mark. It was stored at my parents' house and appears to be unused, in good and beautiful condition. I looked for the original box but couldn't find it. I would like to sell it to someone who understands that it is a used item, so thank you for your understanding. I will pack it carefully and ship it. ◆ Dimensions Diameter: Approximately 11cm Height: Approximately 7.5cm Thank you for looking.