Investiture of the kings of Greece

Following Greece's independence from the Ottoman Empire (1821–1829) and the establishment of a monarchy in 1832, a coronation ceremony based on Byzantine tradition was contemplated for the newly crowned sovereign, Otto I, and regalia were crafted for the planned event, which was scheduled to take place upon the king's coming of age (1835). However, as Otto was not prepared to renounce Catholicism and embrace Orthodoxy, the Church of Greece declined to crown him, and a more modest enthronement (Greek: ενθρόνιση) ceremony was subsequently arranged.

Source: Wikipedia — Investiture of the kings of Greece (CC BY-SA 4.0)