The Gorham Sterling 339 mark appears on sterling silver pieces produced by the Gorham Manufacturing Company, a cornerstone of American silver craftsmanship. This mark typically features the word “Gorham,” the term “Sterling,” and the pattern or model number “339,” which is used to identify a specific design within Gorham’s extensive catalog. The presence of this mark confirms the piece’s sterling silver content and provides a direct reference for dating and attribution. Items bearing the 339 mark often include hollowware or serving pieces and reflect Gorham’s commitment to form, function, and detail. For collectors and appraisers, the 339 mark is essential for verifying authenticity and understanding the piece's place in Gorham’s production history.