Handmade by Ryukyu Chubu glass artisans. 【Size】 Diameter: Approximately 8cm x Height: Approximately 8.8cm ※ A rare item purchased approximately 25 years ago at the Yomitan Village Yachimun Village, the late Seikichi Inamine Chubu Glass Studio Niji SHOP. ● This is a cup glass from the early works of a master craftsman from Okinawa. A pioneer of Ryukyu glass. Characterized by bubbles (unmarked work) ● Ryukyu Chubu glass. The fine bubbles and random shapes are reminiscent of the rough reefs of the Okinawan coastline and the powerful rock faces of nature that protrude from the sea surface in places, creating a beautiful work. ※ The image evokes the appearance of sunlight reflecting on the sandy beach and rock faces at low tide. ※ Ryukyu glass is handmade by the artists one by one. ※ Caution ⚠️ This is not heat-resistant glass. It is vulnerable to sudden temperature changes and may break if hot water is poured into it, or if used in a dishwasher or microwave. ● This is considered a used item due to home storage. ※ There is no major damage due to aging, but please check the images and purchase with your understanding. ● Please check the details of the design and quality in the photos. ● About shipping: Although there is no dedicated box, we will carefully wrap the item as fragile and pack it safely and securely. ● We strive to make the product photos as close to the actual color as possible, but the color may differ from the actual product depending on your monitor settings and room lighting. Please understand and purchase. ● Regarding dimensions: Please understand that there may be some errors as these are amateur measurements.