This is coming from the Doctrine of the Holy Crown namely the only soveriegn is the crown itself and NOT the king himself This means there is a higher political power than the king and this is the crown itself In other nations the aristocracy or whoever named the king prepared a gold crown for him and inaugurated the king In the early days in Hungary when the Hungarians were looking for a new ruler there was the Holy Crown and the aristocracy was looking for a king for the crown who should have physical and mental capabilities also the minimum age was fixed this was unfortunately not always followed Later in the Habsburg times this was abused by Austrians but in Horthy s time it was clear and it was is normal to have a kingdom without a king which is also included in the Doctrine of Holy Crown this case is also representing that the highest sovereign is the crown this is special in the world