Vintage Queen Elizabeth silver jubilee x

sterling silver ingot pendant featuring British hallmarks and the maker's mark "SoS". The hallmarks indicate the metal's purity, where it was assayed, and the year it was produced. Hallmark Details Maker's Mark: "SoS" (top mark) is the manufacturer's or sponsor's mark. Assay Office: The Yorkshire Rose symbol indicates the item was assayed at the Sheffield Assay Office. Standard Mark: The lion passant confirms the item is made of sterling silver quality, meaning it is 92.5% pure silver. Date Letter: The lowercase letter "c" within a specific shield shape denotes the year of assay was likely 1977, a year associated with the Queen's Silver Jubilee. Duty Mark/Special Mark: The fifth mark appears to be a portrait of Queen Elizabeth II, which was a special commemorative mark used for the 1977 Silver Jubilee. Identification The pendant is a commemorative piece produced in Sheffield, England, in 1977, to celebrate Queen Elizabeth II's Silver Jubilee. The "SoS" brand is associated with quality used goods and potentially the original manufacturer.