A refined guinomi (ぐい吞み sake cup) by 加藤時蔵 Kato Tokizo featuring the coveted oil drop tenmoku glaze (油滴天目 yuteki tenmoku). This elegant sake vessel demonstrates the potter's mastery of one of Japan's most challenging ceramic techniques, where iron-rich glazes create lustrous metallic spots resembling oil drops on water when fired in reduction atmosphere. The deep, mysterious surface exhibits the characteristic play of light across the dark glaze, punctuated by silvery metallic spots that seem to float in the ceramic depths. The cup's classical tenmoku form with its wide mouth and subtle foot ring follows the aesthetic traditions established during the Song Dynasty and refined by generations of Japanese tea ceremony masters. Size Height: 4.5 cm Width: 6.8 cm Weight: 180 g, Guinomi only 90 g Condition The piece is in very good condition with natural firing variations typical of oil drop tenmoku glazes. Artist Profile Kato Tokizo was a skilled ceramic artist known for his work with traditional Japanese glazing techniques, particularly tenmoku wares. His expertise in reproducing the complex oil drop glaze demonstrates his deep understanding of ceramic chemistry and firing processes. NOTICE: The lot will be carefully packaged and sent by Japan Post, DHL or FedEx depend on the situation. It takes about 3 weeks to receive normally. Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Sometimes Customes or delivery company in your country contact you for Customs clearance via phone or email. Please make sure that you could answer the phone. If you don't, the parcel will return to me and it cost more double shipping fee for reshipping. I appreciate your cooperation.