I found this old item wrapped in paper, so I believe it's probably unused. I didn't notice any particular flaws, but please understand that it has been stored at home for a long time. There's a mark on the back that says "Tetsuzan," so it's likely Arita-yaki (Arita porcelain). Diameter: 12cm, Height: 5.3cm It has a moderate thickness and weight. How about using it when you have guests?