This is a mug made by Tsutomu Kawada, who was a potter in Kurihara City, Miyagi Prefecture. It could also be used as a soup cup. It was a gift, but I haven't used it and have kept it at home. Only those who understand this are welcome to purchase. I am also listing other pieces by Mr. Kawada! Height: 6.5 cm Diameter: 8.5-9.5 cm A set of 2 small, rounded, gray ceramic mugs. - Color: Gray - Material: Ceramic - Bottom marking: Unconfirmed - Shape: Rounded design - Size: Small mug Thank you for looking.