Blue Danube Blue Danube Set of 4 Diameter: 22cm The manufacturer of "Blue Danube" is Maruta Seitosho, a Japanese ceramic manufacturer. Founded in August 1950, "Blue Danube" has a history of about 50 years. It is known as the "Japanese Blue Onion," inheriting the design of the world-famous "Blue Onion" from Meissen, Germany. This series is said to have ended production in 2022. It hasn't been used much. There are some fine scratches that are not visible in the photos, due to being stacked for storage. Please understand this and that it is a long-term home storage item. I will carefully wrap it in bubble wrap and ship it via Rakuraku Mercari delivery.