Exceptional Shenandoah Valley Redware Bowl with Striped and Marbled Slip Decoration, attributed to the Adam or Coffman Pottery, New Market, VA, circa 1811-1830, tapered bowl with flattened rim, decorated around the interior wall with wide vertical stripes of cream and manganese slips over numerous horizontal trails of cream-colored slip. Interior base with rare, joggled cream and manganese slip decoration, creating a marbled pattern. Interior and exterior covered in a clear lead glaze. The intricate slip decoration follows the potting tradition of Hagerstown, MD, where Christian Adam trained. Exhibiting distinctive New Market clay on its glazed exterior, this work was made by Christian or Jacob Adam, or possibly by John Coffman, who apprenticed to the former and purchased the Adam Pottery in 1827. It is noteworthy for its bold kaleidoscopic decoration, rare Southern origin, and the exemplary condition of its interior. Provenance: Jeffrey S. Evans and Associates, June 17, 2017, lot 1014. Three filled and colored chips to underside of rim, the largest measuring 1 1/4". A few minor, colored nicks to rim. Other shallow chipping to rim. A 3 1/2" crack from rim. Bottom edge with two nicks and minor wear. Wear to interior edge of rim. Minor wear to interior base. H 4" ; Diam. 13 1/4".