It looked very much like a human thighbone. The entire object had a dark brown patina. Down the shaft of the bone were carved symbols. At one end were two skull tops, one to each side of the ball. They had been cut smoothly into half spheres, and covered with dried skin of some kind. In the center of each skin was a knot that looked like a navel. Spaced evenly around each skin, where it stretched across the skull edge, were tufts of coarse black hair tied on with beaded thread. The skull tops looked like they could be human.
The rattling was produced from dried eyes which were in the two skull tops. The rattle gave a hollow, wodden sound.