Catalogue entry no. 379 by Max Loehr:
379 Heavy Trapezoidal Plaque
The light green stone with whitish clouds—a stone of far lesser hardness than nephrite—was cut into a slab of trapezium shape and perforated along the upper and lower edges. There are eight holes at the top and five at the bottom, drilled from both the back and the sides in such a way as to form tunnels below the rear edges. The decoration is limited to one side. It consists of three symmetrically arranged units of engraved curvilinear dragons or parts of dragons whose outlines are executed in double lines. Early Eastern Chou.