Western Han Dynasty (206 B.C. – A.D. 9)
decorated on both sides with incised spirals on low rounded bosses in a geometric grid enclosed by simple line borders around the inner aperture and outer rim, the polished surface with encrusted earth and remains of cinnabar red from burial.
Diameter 6 3⁄8 inches (16.2 cm)
Compare the similar jade bi disc unearthed from a Han dynasty tomb in Wanggoucun, Jingning, Gansu province, illustrated by Gu (ed.), Zhongguo chutu yuqi quanji (Complete Collection of Jades Unearthed in China), Vol. 15, Gansu, Qinghai, Ningxia, Xinjiang, Beijing, 2005, p. 98.
西漢 玉璧 徑16.2厘米