Product Name: Sake Cup Material: Ceramic Size: Outer diameter approx. 6cm, height approx. 5cm My father, who loved pottery and tea, acquired these from acquaintances, friends, and artists. He used to say that his collection included some very old pieces and works by famous artists, but now it's impossible to tell which ones are which, or even if it's true. There are no original boxes or artist's cards. There are potter's marks, but I don't know the artists' names. Please view the images and make your own judgment and take responsibility for whether the item is valuable. This is a long-term, amateur-stored item. Thank you for your understanding. - Items will be packaged in simple, recycled materials. - To prevent trouble, returns are not accepted.