Catalogue entry no. 400 by Max Loehr:
400 Small Disk with Pattern of Plastic Curls
Brownish yellow, faintly translucent, partly calcified jade; on one side there is a long crack and a reddish brown stain. The disk, which has slightly convex surfaces and a wide perforation, is decorated with very small, comma-shaped, raised spirals laid out along intersecting chords. Late Eastern Chou.