For a similar flattish rectangular jade axe, dated Neolithic, Liangzhu culture (c. 3300-2200 BC), see Y. Boda, Chinese Archaic Jades from the Kwan Collection, The Chinese University of Hong Kong, 1994, no. 38.
A jade ge dated to the Shang dynasty with similar long tang perforated with a single hole through the median rib just below the shoulders of the blade in the Grenville L. Winthrop Collection, Fogg Art Museum, Harvard University. See M. Loehr, Ancient Chinese Jades, Cambridge, 1975, p. 42, no. 60.