The Hartford Sterling Co. 1928 mark appears on sterling silver pieces made by the Hartford Sterling Company, an American silversmith active in the early 20th century. The mark includes the company name and the number “1928,” which most likely refers to a pattern, model number, or year of introduction. Known for crafting both flatware and hollowware, Hartford Sterling Co. pieces are valued for their classic styling and solid silver content. This mark confirms authenticity and helps in identifying and dating the item within the company’s production history.