A rare Chinese green and aubergine dragon bowl

A rare Chinese green and aubergine dragon bowl, for a concubine of the fifth rank, the exterior finely incised with two scaly five-clawed dragons above breaking waves in pursuit of flaming pearls of wisdom, the base with a six character Daoguang seal mark in under glazed blue and of the period 1821-1850, a faint hairline crack, 11.2cm. Cf. Jan Stuart, Imperial Porcelain and Court Values, Orientations, August 1993, fig. 3 for a Kangxi dish in the same palette from the Tianminlou Foundation, Hong Kong.