QIANLONG PERIOD, DATED TO 1784 AND OF THE PERIOD

A Qianlong 'Eight Daoist Trigrams' mirror of very similar decoration, but with a bracket-lobed rim and inscribed with a ren yin date (1782), from the Qing court collection and still housed in Palace Museum, Beijing is illustrated and discussed by He Lin, Collections of the Palace Museum: Copper Mirrors, Beijing, 2007, pp. 264-265, no. 168. The author noted that mirror was made by the imperial workshop in Beijing.