Catalogue entry no. 60 by Max Loehr:
60 Dagger-Axe or Knife Blade
Opaque, bluish gray-green jade that has turned a dull buff and light brown color over a large part of the surface. The blade has a crest from tip to butt, and neatly ground, longitudinal facets that curve out at the beginning of the tip. The tip is quite unusual; its shape might require that the blade be interpreted as an upward-pointing, recurved knife rather than as down-ward-pointing ko. The edges are nearly straight, ending with sharply cut shoulders, from which the broad, plain tang issues. A conical hole is drilled through the crest, behind the shoulders. The axis of the tang seems to favor the interpretation of this blade as a knife. Shang.