(FS) This was definitely a well love piece The glaze on the inside has lots of ware. The outside is different, it has a beautiful gloss and fabulous lite to darker blue tone. It's approximately 5.5"×5.5". The shape is kinda  round with a sort of square opening.  It's clearly marked Japan on the bottom. It has a lot of indications It's a Awaji pottery piece but I'm not sure. This could be used as a planter, decorative piece,  or to serve. Thanks for your interest.