A qingbai lobed dish, Northern Song dynasty, 10.2 cm diam. Provenance: Duncan Macintosh Collection. Sotheby's, Melbourne, 17 to 18 May 2006, lot 335. Dr Carradus Collection. Mossgreen, Melbourne, 25 November 2008, lot 1199. Duncan Macintosh was a founder of the Hong Kong Ceramic Society and an author, most noted for his study of Chinese blue and white porcelain