Thank you for viewing. This is a Bizen-yaki sake cup (guinomi/ochoko). My father, who was born and raised in Bizen City, acquired these from acquaintances, friends, and artists. He said that his collection included some very old pieces and works by famous artists, but now it's uncertain which ones are, or if it's even true. Please examine the images and make your own judgment and assessment regarding the value of the items. There are no accompanying boxes or artist's pamphlets. There are potter's marks, but I do not know the names of the artists. These items have been stored by a private individual for a long time. Thank you for your understanding.