This is a rare black Raku tea bowl with a unique design, as if a landscape painting is affixed to the window. It is believed to be old, but the rounded shape and design have a somewhat pop-art feel. There is a "Raku" mark on the bottom, but the details are unknown. The box has age-related stains. Please take a look at the photos and understand before purchasing. ■Size Diameter: Approximately 11.6 cm, Height: Approximately 7 cm Thank you for looking.