The SC Sterling 198 mark appears on sterling silver items and likely refers to a piece produced by a silversmith or company with the initials “SC.” The “Sterling” designation confirms the item is made of genuine sterling silver, while “198” serves as a pattern or model number that helps identify the specific form or design. Without additional branding, “SC” may refer to a lesser-known or boutique silversmith, or potentially a private label. This mark is useful for confirming silver content and cataloging the piece, especially when researching production origin or matching to other items in a set. It offers key reference points for collectors and appraisers alike.