A VERY LARGE 'BI' DISC, China, probably Warring states period / c. 3rd-1st ct. BC . The outer and inner bands are carved with bovine heads in low relief and separated by a central band with a lattice pattern. The polished jade disc has a dark grey colour with large light-grey patches. - Property from an important private collection, according to the owner since aprox. 1920 in family property - Some calcification, minor wear