A SMALL WHITE JADE DISC, BISong DynastyBoth sides subtly carved in relief with bands ofma scrolls encircling a border of eight characters in seal script, the softly polished stone with minor russet inclusions.4.3cm (1 5/8in) diam. (2).Provenance: 宋 穀紋白玉璧See a related example of a pale green jadebi, Song dynasty, illustrated inCompendium of Collections in the Palace Museum: Jade 5, Beijing, 2011, p.185, pl.211.參考北京故宮藏一件宋代青玉雲紋小玉璧，著錄於《故宮博物院藏品大系：玉器編5》，北京，2011年，頁185，圖版211。