Disc, China, Warring States Period (approx. 480-221 BCE). Nephrite. Diam. 11 in x Th. 1/4 in, Diam. 27.9 cm x Th. 0 .64 cm; Diam. at hole 1 5/8 in. The Avery Brundage Collection, B60J140 © 2017 Asian Art Museum Chong-Moon Lee Center for Asian Art and Culture.