The phrase refers to hallmarks or maker’s marks found on silverware produced by William Adams, a silversmith or a company associated with that name. These marks serve as identifiers, indicating the origin and sometimes the date of manufacture of a piece. Examining a specific example, a three-part mark might consist of the maker’s initials, a symbol representing the city of origin, and potentially a date letter.
Such markings are crucial for authentication and valuation. They provide essential evidence for collectors, appraisers, and historians to determine the piece’s provenance, age, and relative value. Understanding these markings allows for discerning authentic items from reproductions or pieces by other silversmiths, providing a safeguard against misrepresentation. Historically, these markings have played a significant role in maintaining standards of quality and protecting the reputation of the silversmith.