Catalogue entry no. 345 by Max Loehr:
345 Trapezoidal, Knife-shaped Tablet
The stone shows sharply defined, translucent, pale bluish green and opaque buff areas, divided by a narrow, dark bluish band. The back is straight, while the cutting edge and lateral edges are curved. Two conical holes are drilled from opposite sides near the back; a third one, near one of the sides. Eastern Chou(?).