Imperial diptych offerings to the emperor. However, the fact that the Barberini ivory was almost certainly not a diptych, but some kind of imperial icon without a second panel is a serious argument against the existence of the imperial diptych type. The two panels representing the empress Ariadne, in the Bargello in Florence and the Kunsthistorisches Museum in Vienna, also belong to the hypothesied imperial diptych type. They are the only central panels of such a diptych (other than the Barberini ivory) to survive, since all other fragments of such diptychs are from side panels. Imperial diptych In Late Antiquity, an imperial
Imperial Sword Imperial Sword The Imperial Sword () is one of the four most important parts of the Imperial Regalia ("Reichskleinodien") of the Holy Roman Empire. During a coronation, it was given to the emperor along with the Imperial Crown ("Reichskrone"), Imperial Sceptre ("Reichszepter"), and the Imperial Orb ("Reichsapfel"). All four parts of the Imperial Regalia are displayed in the Imperial Treasury at the Hofburg Palace in Vienna, Austria. The Imperial Sword was made for Emperor Otto IV in the twelfth century, possibly for his coronation as King of the Romans in 1198. Its predecessor, the sword of Otto III, is also