A similar example in the Victoria and Albert Museum incised with drgons, is illustrted by van oort, The Porcelain of Hung-Hsien, pl. 17. A pair of spittoons, with Guangxu mrks in aubergine, from the E.T. Chow Collection was sold in Hong Kong, 25 November 1980, lot 102.
The Chinese University of Hong Kong, Imperial Porcelain of Late Qing, Kwan Collection, 1983, Catalogue, no. 150
National Museum of History, Taipei, Imperial Porcelain of late Ch'ing, From the Kwan Collection, 1985, Catalogue, no. 150