According to Palace records, bowls of this auspicious design appear to have been commissioned especially for the celebration of the Qianlong Emperor’s 70th birthday in 1780. A slightly larger pair of shallow bowls of this type were offered in our Monaco rooms, 13th February 1983, lot 375; and another was offered at Christie’s New York, 9th November 1981, lot 333. See also a set of ten bowls of deeper shape, decorated with this design, in the Palace Museum, Beijing, included in the Museum’s exhibition The Imperial Packing Art of the Qing Dynasty, Beijing, 2000, cat. no. 99.