This stoneware crock was produced by the J. Seymour Stoneware Factory in the late 19th century, likely around 1870. The piece features a salt-glazed finish with a distinctive cobalt blue clover decoration, which was a common motif used by American pottery manufacturers during this period. The number "4" indicates its capacity in gallons. American stoneware crocks like this were essential utilitarian vessels used for food storage in households throughout the 19th century. These pieces are highly valued by collectors of American folk art and antique pottery for their historical significance, craftsmanship, and decorative appeal. The cobalt blue decoration adds both aesthetic value and helps identify the manufacturer and region of production.