The George W. Shiebler & Co 380 mark is found on sterling silver items produced by George W. Shiebler & Co., a renowned American silversmithing firm known for bold, artistic designs in the late 19th century. The number “380” is a catalog or pattern reference that identifies a specific item or form within Shiebler’s extensive production. Pieces bearing this mark often reflect the company’s signature blend of classical influences and creative craftsmanship. The 380 mark is crucial for verifying authenticity, tracing design lineage, and determining historical and collectible value.