Excerpt from the Thaw Catalog: The small, shallow bowl in the center of the disc holds only a small amount of tobacco, suggesting a ceremonial function. Circling around the rim is a long-tailed mammal figure carved in low relief. Notches are carved around the rim. Pipebowls of this type were attached to cylindrical wooden stems. Disc pipe bowls made of catlinite were used by the late prehistoric ancestors of Siouan-speaking tribes in the upper Mississippi and lower Missouri River regions, between A.D. 1400 and 1600.
Physical dimensions: 
height 1.25 in ; length 3.625 in ; width 2.25 in