The Crown Jewels after his election as King Otto of Greece, they had ordered, in 1832, from jewelery «Fossin et Fills» in Paris, famous for the royal coronation, which was scheduled to take place in Athens, in the temple of Ag. Irini. These crown jewels, never arrived in Greece, and finally, no coronation ceremony.
Tthe Crown, the Sceptre and the Sword ritual, were in Iohenschwangau Munich tower. After the lapse of long correspondence between Bonn embassy (Ambassador Th. Ypsilanti) and FM (Ev. Averoff), for solving a number of procedural matters were returned to Greece in December 1959.
By order of his father, Duke Albrecht of the house Wittelsbach of Bavaria, Prince Maximilian came to Athens to deliver the royal family of Greece the crown jewels, the ancestor of Otto sulfur. The tradition of royal insignia, was in a festive ceremony in the palace throne room Athens on 21 December.
As for the use of the royal crown jewels of Otto, only the crown and the ceremonial sword used twice since 1959, at the funeral of King Pavlos in 1964, and the funeral of Queen Freideriki in 1981.
From the crown jewels, crown probable that is held by the Greek royal family, while the remaining two did not know where, and not those set out in the National History Museum, the Old Parliament building, as it turned.
(The article is from The Royal Chronicles just i made the translate)