The design on this kidney-shaped piece is based on a Japanese original. The Derby factory started porcelain production in 1750. Prior to its merger with the Chelsea factory in 1770, Derby’s output was mainly wares decorated in the European style. It was only from the 1770s that Japanese-inspired patterns started to be used at Derby. The Japanese Imari style had one the greatest impacts on European ceramics. Imari porcelain was produced in the area of Arita in present-day Saga prefecture on Kyushu Island. Imari derived its name from the port from where it was shipped. The range of enamels used on Imari wares is fairly wide but generally consists of blue, red and gold.