This is a free cup made by Keizan Udagawa, a ceramic artist of Hagi ware. Mr. Udagawa's father is Seikoku, and his uncle is Hakuo. He creates quite unique works. This is a rather dynamic piece, and I think it has a deep flavor. Brand new, unused. Size: Diameter: 10 cm Height: 8.9 cm Potter's mark: Keizan No accompanying box It's easy to hold and I think it's well-made. Thank you very much.