Catalogue entry no. 87 by Max Loehr:
87 Pi Disk
Strongly translucent, apple-green stone with brown streaks and with opaque, light brown areas where calcification has taken place. Small, sturdy piece, polished smooth except for a curved ledge on one side and a straight ledge on the reverse side. The hole is asymmetrically conical, drilled from one side, and left rough at the narrow edge. Shang(?).