I purchased this online from H.works in Tachikawa about three years ago. Mr. Kotoge's unique techniques have garnered him many fans. Size: Diameter approximately 8.7-9.0 cm, Height approximately 7.5-7.8 cm The left one has been used 3 or 4 times. The right one has been used once. Mr. Kotoge's works have a characteristic of ink absorption, and the changes that occur over time are part of the enjoyment. I would be delighted if the next person could enjoy these changes as well. As these are handmade items, there may be individual differences, unevenness, iron spots, pinholes, cracks, and bleeding, etc... Please understand that these are handmade items. Please read my profile before considering a purchase.