Sash of the Three Orders

The Sash of the Three Orders (Portuguese: Banda das Três Ordens, or Banda da Grã-Cruz das Três Ordens) is a decoration that combines the insignia of the Grand Crosses of the Military Orders of Christ, Aviz and St. James of the Sword. It is the symbol of the Portuguese presidential magistracy, in their capacity as the fount of the Portuguese honours system; therefore, it cannot be conferred on nationals or foreigners, nor can it be used outside the exercise of office of the President.
Unlike other decorations, the Sash is not granted to Presidents upon their inauguration, but rather only worn by them during their terms in office. It can be worn with any of the Grand Collars of the orders possessing that grade, but without the sash and wearing the respective order's star that gives precedence to that of the Three Orders' Sash.
The decoration, along with the similar Sash of the Two Orders, was officially founded in 1789 by Queen Maria I. However, its origins can be traced further back to 1551, when Pope Julius III, under great diplomatic pressure, issued the Praeclara Clarissimi Papal Bull of 30 November, surrendering his position as Grand Master of the three Catholic knightly orders (the Order of Our Lord Jesus Christ, the Order of St. Benedict of Aviz, and the Order of Santiago) to King João III of the House of Aviz, who proclaimed it hereditary in the Portuguese Crown. Despite this, the monarchs often wore only the insignia of the Order of Christ.
It was during the reign of Maria I that the orders were secularized from religious orders into military orders of merit; the queen further decreed that the insignia of all three orders were to be combined into one, to ensure that no one order was favored above the others. The Sash thus became a unique decoration worn by the monarch, distinguishing them as Grand Master of the Three Military Orders, along with all other Portuguese orders of chivalry. It was also entitled to be worn by the heir to the throne (titled Prince of Brazil, and from 1815 Prince Royal of Portugal) as "Grand Commander of the Three Orders", and on occasion gifted to the consort of the monarch upon their marriage. Other princes of the blood royal (Infantes) belonging to the House of Braganza, meanwhile, were entitled to wear the Sash of the Two Orders.
During the era of the constitutional monarchy, it was customary to confer the Sash on foreign monarchs and heads of state as a diplomatic gesture. In the wake of the revolution of 1910 and the proclamation of the Republic, the Sash was abolished in conjunction with all royal orders (save for the Order of the Tower and Sword). It was later restored in 1918 by decree of President Sidónio Pais, after which it continued to be awarded to foreign heads of state.
In 1962, a new decree restricted the Sash of the Three Orders to a decoration exclusive to the President, and thus could no longer be conferred. So, after the last surviving recipient Queen Elizabeth II died in 2022, only the President of Portugal can wear the Sash.
The Brazilian branch of the Three Orders' Sash was founded by Emperor Pedro I on 13 May 1825, and was abolished in 1891 by the First Brazilian Republic.
In the official portraits of many of the Portuguese Heads of State from the 19th and 20th centuries, the Sash of the Three Orders is one of the main piece represented:
Several portraits of Portuguese and Brazilian royalty also display the use of the Sash: