Western Han Dynasty (220 B.C. – A.D. 9)
with a central ridge on one side and flat on the reverse, carved on both sides with scroll-linked bosses.
Diameter 13⁄16 inch (2.1 cm)
A very similar jade bead is illustrated by Salmony, Archaic Chinese Jades from the Edward and Louise B. Sonnenschein Collection, Chicago, 1952, pl. XC, no. 15. Compare also the bead from a Han dynasty tomb at Chaohu, Anhui province, illustrated in Chaohu Han mu (Han Burials in Chaohu), Beijing, 2007, col. pl. 69:3-4, and in a line drawing on p. 129, pl. 94:5.
西漢 碟形玉飾 徑2.1厘米