I am not an expert in this field, so please excuse any errors. Based on image searches using AI, the results indicated it was Hagi-yaki pottery. The patterns matched, so I believe this is correct. The manufacturer is unknown. The dimensions are approximately 15cm in maximum diameter and 6.5cm in height. Please note that these measurements are approximate, as they were taken by a non-professional. The following description is provided by AI. Please understand that this is an AI-generated description before referring to it. 【Unique Design】 This bowl has a handmade texture and a unique design. It will brighten up your dining table. 【High-Quality Material】 Made of ceramic, it is durable and suitable for everyday use. It has a refined finish. 【Versatile】 It is the right size for various dishes, such as salads, soups, and desserts. - Color: White - Shape: Round - Material: Ceramic - Design: Handmade style - Bottom: Smooth finish Thank you for looking.