This is a reddish-brown ceramic tea bowl. It has a stamp "己山" near the base. - Color: Reddish-brown - Shape: Round - Material: Ceramic - Features: Handmade finish - Usage: Tea ceremony utensils This item has been stored in my parents' display shelf for many years. Please purchase only if you understand that it is old and has been stored at home for a long time. I am not familiar with crafts myself, so I may not be able to answer detailed questions(^^;) Please refrain from purchasing if you are concerned about minor details or are very sensitive, as this item has been stored at home. Size Diameter: Approximately 12.2cm Height: Approximately 8.2cm Please note that there may be some errors as this is a measurement by an amateur. Instant purchase is OK! I also have other matcha bowls and ceramics for sale, so please take a look if you like.