Catalogue entry no. 199 by Max Loehr:
199 Heavy, Long Chisel
Mottled dark brown and deep olive-green, fine-grained stone. The blade has subtly inward curved sides, flat upper and lower surfaces, a beveled cutting edge, and a slanting, semifinished butt. The conical perforation is drilled from one side and reamed at the opposite side. Western Chou(?).