Size: Diameter: Approximately 11.5cm Height: Approximately 7.7cm The ceramic mark on the back is difficult to see due to the color, but it appears to be "松楽" (Matsuraku). After research, it may be Sasaki Matsuraku? Since I don't have detailed information, please make your judgment based on the images. An explanation of Raku ware is included. There is also a paper box that the teabowl and the explanation were originally in, but it is in poor condition, so I plan to dispose of it. I believe the condition of the teabowl is relatively good, but there may be some stains and scratches due to aging. Please check the images. Please purchase with the understanding that this is a long-term storage item. Kuro-raku chawan (black Raku teabowl), Raku ware, tea ceremony utensils