The mushroom design is interesting. No maker's mark or other markings are visible. How about a nice, warm sake? Tokkuri (Sake Bottle) Height: 10.5 cm, Widest part: 7 cm Choko (Sake Cup) Height: 4 cm, Diameter: 5.5 cm I have cleaned these with bleach and detergent. These are used items. They have been stored in an old house, in a chest of drawers, by a non-professional. Please consider purchasing only if you understand this.