Catalogue entry no. 584 by Max Loehr:
584 Mace Head(?)
Variegated light and dark gray stone with striking white veins. The stone is less hard than jade. A strong, slightly tapered stem of oval cross-section is surmounted by a down-curved, crescent-shaped head, whose concave edge is strengthened by a flange. The curve of this flange is repeated in two crescents of diminishing size placed at equal intervals below the head. One tip of the lowermost crescent is broken off. With its polished surface and softened edges, this piece combines a high level of craftsmanship with an extraordinary design. Date uncertain.
According to Umehara, the object reportedly was found in a Shang period tomb in Honan. While this report may be reliable, the object itself does not readily point to such origins. Its shape, its material, and its lapidary technique make it seem alien among Shang types. Nor can its purpose be determined beyond doubt. Umehara’s designation, “atypical yüeh [axe],” apparently was based on the assumption that the crescent-shaped head has a cutting edge, which it does not. The designation of mace head, too, is a tentative one, but at least not outright contradicted by the shape.
There is a comparable, simpler, and less shapely specimen of this type in the Freer Gallery of Art (No. 19.52), unpublished so far, that was kindly brought to my attention by Dr. Thomas Lawton. The piece has a tapering stem and crescent-shaped top, but lacks the two smaller crescents below the top. It is made of a chestnut-brown stone with buff and cream-colored alterations. Its origin is assumed to be Chinese; its date, proposed by William M. Trousdale, Shang. Although the Freer piece relieves ours of its isolation, it does not really vouch for either provenance or age of this peculiar type, which certainly does not recommend itself on formal grounds as a Shang Chinese product.