Thank you for viewing. Is this a black Raku tea bowl for the tea ceremony, with the mark "Shoraku" on the bottom? I received it from someone, and it has no accompanying box or other items, so the details are unknown. There appears to be a kiln mark, but there are no cracks or chips. It is in very beautiful condition. How about using it for practice? Size: Diameter...approx. 11.5cm, Height...approx. 8.5cm Please understand that this item has been stored for a long time before purchasing.