Type... Porcelain Ware... Imari/Arita ware Color... Blue Koransha / Old Koransha Ruri Glaze Heavy Ground Pattern / Coffee Cup & Saucer Dimensions (approx.): Cup Diameter: 9.1 cm Height: 5.5 cm Base diameter: 4.7 cm Dimensions (approx.): Saucer Diameter: 14.2 cm Height: 2.1 cm Base diameter: 7.6 cm This is a modern coffee cup & saucer from Koransha, a long-established Arita porcelain manufacturer. The base has the old type of "Ranmei" (orchid mark) sometsuke (blue and white) mark. Although unused, it is old and shows its age. There is a small glaze skip on the saucer.