Brush cleaning vessel with sacred jewel and mouse design, Hirado ware, Mikawachi kilns, Edo period, 1800s AD, porcelain - Tokyo National Museum - Ueno Park, Tokyo, Japan - DSC08917

It is known mainly for its sometsuke underglaze cobalt blue and white porcelain, with the amount of blue often low, showing off the detailed modelling and the very fine white colour of the porcelain. This has a finer grain than most Japanese porcelains, allowing fine detail and thin and complicated openwork in forms. It was used for tablewares, but was especially noted for small figures and structured objects such as incense burners and brush rests. It developed supplying the domestic Japanese market in the 18th century, in the gap between the two main periods of Japanese export porcelain, and produced much of the best Japanese porcelain of the late 18th century and early 19th century. When large-scale exports resumed, it had a good share in the trade.