DAOGUANG IRON-RED SIX-CHARACTER MARKS AND OF THE PERIOD (1821-1850)

Compare an identical pair exhibited at the Chinese University of Hong Kong, Imperial Porcelain of Late Qing from the Kwan Collection, illustrated in the Catalogue, 1983, pl. 55; the pair was again exhibited at the National Museum of History, Imperial Porcelain of Late Ch'ing from the Kwan Collection, 1985, illustrated in the Catalogue, pl. 55; the pair was later sold at Christie's Hong Kong, 1 December 2010, lot 3045