The George W. Shiebler & Co 125X mark is found on sterling silver items created by the esteemed 19th-century American silversmith George W. Shiebler. The mark includes the company name and the number “125X,” which serves as a specific pattern or form reference within Shiebler’s catalog. The addition of the letter “X” often denotes a variation or modification of a standard design. Shiebler was known for innovative, artistic silver pieces featuring classical motifs and exceptional detail. This mark helps collectors and appraisers verify authenticity, trace design lineage, and accurately assess the piece’s place within Shiebler’s celebrated production history.