This is a black lacquered teacup coaster. There is also a pattern carved on the underside. It has been stored in a dark place and has never been used. It appears to be a registered product of the Japan Urushi Lacquerware Cooperative Association / Aizu Lacquerware Cooperative Association, and it has a number. -------------------------------------------------- It has been carefully stored, but it is stored at a private residence by a non-professional. Please ask any questions before purchasing if you have any concerns. --------------------------------------------------