This is a tea bowl by Yamamoto Toyo, a Living National Treasure of Bizen ware. It is a work from his final years, and the tea bowl is attractive for its very well-balanced form and color gradation. The calligraphy on the box is also very powerful and impressive. Diameter: Approximately 12.0cm Height: Approximately 7.2cm It comes with a signed box, a cloth wrapping, and a ceramic history document.