Sotheby's Hong Kong catalogues of the T.Y. Chao private and family Trust Collections and the British rail Pension Fund, comprising three Sotheby's Hong Kong hard back auction catalogues of Chinese porcelain, enamels and jade carvings from the works of Art collection of the British rail Pension Fund, 16 May 1989; and the T.Y. Chao private and family Trust Collections of Imperial Chinese ceramics and jade carvings part I, 18 November 1986, and part II, 19 May 1987