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The jars date back to the 18th century Qing dynasty and are known as doucai lotus and chrysanthemum jars. Doucai is a porcelain painting technique where elements are outlined in blue before being glazed. The 4.5-inch tall vases would have been created in the Chinese imperial kilns of Jingdezhen, Jiangxi province and were based on a prototype that has since been lost. Several identically patterned jars have been found over time and are considered important artifacts.