A Japanese celadon circular porcelain kogo (incense box), decorated in low relief with an Akita dog, impressed seal mark of Suwa Sozan I to the base, original signed and sealed wood box, circa 1920, 7cm diameter, impressed seal mark of Suwa Sozan I to the base, original signed and sealed wood box, together with a Japanese celadon porcelain kogo in the from of a bull with impressed seal mark of Suwa Sozan II, first half of the 20thC, 7cm long. Note - The rectangular seal on the box reads Teishitsu Gigeiin, the first Suwa Sozan (1851-1922) specialised in celadon-glazed ceramic carving and was appointed Teishitsu Gigeiin - Artist-craftsman to the Imperial Household - in 1917. Suwa Sozan II (1890-1977) was one of the few highly respected female potters of the early 20thC and took over the family studio after the passing of her father in 1922, like her father, her works are greatly admired by the Royal Family for their grace and fine artistry.