QIANLONG SIX-CHARACTER MARKS IN IRON RED WITHIN DOUBLE SQUARES AND OF THE PERIOD (1736-1795)

An iron-red and sgraffiato 'dragon' cup and saucer of this design and with iron-red Qianlong six-character marks within double squares, are illustrated in Selected Porcelain of the Flourishing Qing Dynasty, Hong Kong, 1994, pp. 276-77, no. 9, and another cup, lacking a saucer, also in the collection of the Palace Museum, Beijing, is illustrated in Gutao Ciziliao Xuancui, Beijing, 2005, p. 255, no. 225. See, also, the Qianlong cup and saucer of this design sold at Christie’s New York, 15 September 2017, lot 1218.