Royal decree of 20 May 1927 states: The coat of arms of the Realm may be used only by the state's authorities in the exercise of their official activity. The coat of arms may be used by the Royal Court, by the government and its ministries, by the parliament, by the law courts, and by some others. Matters of the coat of arms are treated by the Ministry of Foreign Affairs. The state coat of arms has no achievement save the surmounting crown.