sentences:  Dublin Assay Office
  
  The Dublin Assay Office was established in 1637 to supervise the assaying of all gold and silver throughout the whole Kingdom of Ireland, when the Dublin Company of Goldsmiths was founded by Royal Charter (13CharlesI), re-establishing the medieval Guild of All Saints.Initially, hallmarks consisted of the goldsmiths' proper mark which was the maker's mark originally used to identify the silversmith or goldsmith responsible for making the article.