Attributed to the Salem pottery during Heinrich Schaffner’s tenure as master. For comparable pipes, see Michael O. Hartley, “Salem Pottery after 1834: Heinrich Schaffner and Daniel Krause,” in Ceramics in America, edited by Robert Hunter and Luke Beckerdite (Lebanon, N.H.: University Press of New England for the Chipstone Foundation, 2010), p. 157, figs, 33-4.