Catalogue entry no. 342 by Max Loehr:
342 Asymmetrical Knife
Translucent light green stone with large, opaque buff-colored areas. The surface is unusually rough and dull. The blade resembles the trapezoidal knives, but narrows toward the left end. Of the three conical perforations along the back, two are drilled from the upper surface, and one from below; the fourth perforation, placed along the median near the right end, is also drilled from below. The lower edge is left blunt. Eastern Chou(?).