Catalogue entry no. 53 by Max Loehr:
53 Large Dagger-Axe
Mottled yellowish and bluish green, strongly translucent jade with buff markings. On both sides of the median crest, which extends into the butt in a continuous curve, the blade is hollow-ground. Its edges are beveled and blunt, the bevels turning outward where the tip begins and continuing through the tang, which is rectangular. Between the shoulders is a conical perforation with a rough lower edge, drilled from the right side of the blade. Shang or Western Chou.