Lot 72. A yellow and russet jade archaistic 'chi dragon' disc, bi, 17th-18th century; 6.2cm (2 1/2in) high. Estimate HK$30,000-50,000 . Sold for HK$ 4,240,000 (€ 506,613). Photo Bonhams. The pierced oval disc worked in high relief on both sides, encircled...