A blue and white and iron-red decorated 'Dragon' bowl, Yongzhen period, Qing Dynasty, Biding ruyi marks in underglaze blue, the bowl is decorated to the exterior with iron-red dragons amongst underglaze blue clouds and a band of waves enclosing each foot. The interior is decorated with a similar dragon. The underside is decorated with a brush, ingot, and ruyi sceptre in underglaze blue, representing the phrase 'Biding ruyi', 18.8 cm diameter 8.1 cm high