Disk (<em>bi</em> 璧)

Perforated disk of the type pi [bi] 璧; bored mostly from one side leaving slight median ridge; obverse in mottled tones of browns, reds, and dull green with cloudy white veinings of incipient disintegration that completely cover the reverse; saw marks on reverse, scattered wormhole-like pittings on both surfaces. (Rim broken in two areas.)