This medal was instituted on the occasion of the golden wedding of William I and his wife Augusta by King and Emperor Wilhelm I on June 11, 1879. William married a prince, on June 11, 1829 Augusta of Saxe-Weimar-Eisenach, the daughter of Grand Duke Karl Friedrich. Their children were Friedrich Wilhelm (Frederick III.) (1831-1888), his successor as emperor from 1858 married to Victoria, Princess Royal and Louise (1838-1923) later wife of Frederick I. Grand Duke of Baden. Die ceremony numbers for the 3rd class with 100 pieces. RR