Disk (<em>bi</em> 璧)

Perforated disk of the type pi [bi] 璧; mottled shades of olive green and brown with spots of translucent strata in lighter tones; surface dull and weathered; incised decoration alike on both sides depicts phoenix (?) and plant forms and a bovine like mask; outer edge grooved. (Small blemishes and cracks, rough area on rim where whitish disintegrated portion has been partly removed, narrowing the margin.)