Set of wine cups with checker design, iron brown under glaze, Iwakura ware

Height 6.1 cm, mouth diameter 5.5 x 5.7 cm, bottom diameter 3.7 cm
Drip Sui Art Museum
　This set of five jar-shaped cups has a black rim and a stone pavement-style design on the body. The rim is blackened and the body is covered with a rust glaze with a cobblestone design, and the entire surface, except for the base, is covered with a penetrating glaze with a hint of reddish tint. The left side of the base is stamped “Iwakura”.