This image shows a backstamp from the East Palestine Pottery Company, which operated in East Palestine, Ohio, between 1880 and 1904. 

• Manufacturer: East Palestine Pottery Company (E.P.Co.). 

• Era: Produced roughly between 1880 and 1904. 

• Mark Details: The mark features a crown symbol with the word "WARRANTED" below it, indicating the quality or durability of the earthenware.