This item was purchased by my grandmother in the past from a department store's sales representative. *No box, stored in a display shelf. There is no certificate, but based on online searches, I believe this is a Yunomi (tea cup) made by Tatsuzo Shimaoka. Tatsuzo Shimaoka Zogan Akae (Inlaid Red Painting) Floral Yunomi Size: Mouth Diameter: 9cm Height: 6.5cm Foot Diameter: 4.7cm *Measurements are approximate. ▼Artist Information Tatsuzo Shimaoka 1919 (Taisho 8) – 2007 (Heisei 19) Graduated from Tokyo Institute of Technology. Studied under Shoji Hamada. Created a unique Shimaoka Zogan Mishima-de style, inspired by Jomon pottery. Member of the Japan Folk Crafts Association. Recipient of the Tochigi Prefecture Cultural Merit Award. Living National Treasure. *Please note that this is based on my amateur assessment, and there is no certificate. Please let me know if you require any additional photos.