Orders, decorations, and medals of the Holy See of the Catholic Church by his authority as head of the Holy See and sovereign of the Vatican City State. Historically, membership in these orders was either conferred by Papal bulls not signed by the Pope or by apostolic letters signed by the Pope himself. Since the reforms of these orders in the beginning of the 20th century, the diplomas have been signed by the Cardinal Secretary of State. In general, "Papal orders of knighthood" refers to the five equestrian orders of the Holy See awarded directly by the Supreme Pontiff as head of the Catholic Church, Holy See and
Orders, decorations, and medals of the Holy See knighthood" does not include the Sovereign Military Order of Malta, which (although it is the only other order of chivalry recognised by the Holy See) it is internationally recognised as being itself sovereign. Of the papal orders, the highest and most infrequently awarded is the Supreme Order of Christ; the second order is the equally rare Order of the Golden Spur; the third is the Order of Pius IX; the fourth is the Order of Saint Gregory the Great; and the fifth is the Order of Saint Sylvester Pope and Martyr. Tracing its origins to the dissolution of the Knights