Seto is the oldest ceramic center in Japan, and is still the largest pottery-producing region for the nation. Seto wares were the first Japanese glazed stoneware, produced during the Kamakura period (1185-1333). Early Seto wares imitated Chinese Sung dynasty celadon designs in both decoration and shape, but during the fourteenth century Seto ware production expanded with new techniques and refined glazes. It was also around this time that Japanese ceramics began to be heavily influenced by the practice of tea drinking, spurring the development of a purely Japanese style stoneware.
Certificate box with an inscription on the lid: Higashi-gama, excavated tea bowl