The Gorham Sterling 770 mark is stamped on sterling silver pieces crafted by the Gorham Manufacturing Company, a leader in American silverware since the 19th century. This mark includes the word “Gorham,” the designation “Sterling,” and the pattern or model number “770,” which helps identify the exact design and era of production. The presence of the 770 mark signifies that the piece is made of genuine sterling silver and ties it to Gorham’s catalog of refined, collectible patterns. Pieces bearing this mark are typically hollowware or tableware items and are valued for their craftsmanship and historical relevance. Collectors rely on the 770 mark to confirm authenticity and determine both origin and value.