The Sterling 212 mark appears on silver items made of genuine sterling silver, indicated by the word “Sterling.” The number “212” functions as a pattern or model number used to identify the specific design or form of the piece. While the maker’s name is not included in this mark, such numbered sterling items are often attributed to mid-century or early 20th-century American manufacturers. The mark helps collectors and appraisers confirm silver content and catalog the item, even in the absence of a brand name. It’s especially useful for matching pieces within a set or identifying production era through pattern guides.