Ko-Imari soba choko with iris and waterfowl design, sometsuke (underglaze blue), mid-Edo period. Purchased in 2004 at Kobijutsu Nishikawa in Azabu-Juban. Small and easy to handle size. Size: Diameter 7.1cm, Height 5.9cm, Base diameter 4.8cm. No damage. Made around the mid-Edo period, flat base.