QIANLONG SIX-CHARACTER MARK IN A LINE AND OF THE PERIOD (1736-1795)

The imperial poem inscribed on the present ink cake is recorded in Qing Gaozong yuzhi shiwen quanji: yuzhishi, vol. 3, juan 87 (fig. 1). Compare to a nearly identical ink cake with gilding on the two dragons and additional decoration on the sides, is in the collection of Beijing Palace Museum, which does not appear to be published but can be found on the Palace Museum website.