Apart from wishing His Majesty well it is an occasion to reflect upon the fact that he is now the longest lived reigning Spanish monarch, having oulived King Carlos III. He has very nearly outlived Queen Isabella II, born in 1830, but she formally abdicated in 1870, although she lived on until 1904. The King's father, the de jure King Juan III, died in his eightieth year in 1993.
In my post in November to mark the 35th anniversary of the King's formal accession I reproduced a photograph of the oath taking before the Cortes, which included the crown itself in the foreground.
The Commemorative Crown first used at the funeral of Elisabeth Farnese, Queen consort of King Philip V in 1766. The crown, made of silver gilt and which has no gems, displays the seals of the founding kingdoms of Castile and León, with a turret and lion respectively. It was made by order of King Charles III in Madrid and replaces insignia lost in the Great Fire of Christmas Eve 1734 which destroyed the old royal palace in Madrid .
A silver crucifix, from the collection of the Congress of Deputies.
The crown is held by the Patrimonio Nacional.