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
Jabach Altarpiece Jabach Altarpiece The Jabach Altarpiece is an oil on lime tree panel painting by German Renaissance artist Albrecht Dürer, executed around 1503–1504. Originally a triptych, only the side panels are now preserved: the right picture, measuring 96×54 cm, is housed in the Wallraf-Richartz Museum of Cologne; the left picture, measuring 96×51 cm, is housed in the Städel of Frankfurt. The altarpiece was probably commissioned by Frederick III, Elector of Saxony, for a chapel in his castle at Wittenberg, perhaps in occasion of the end of the plague in 1503. The reconstruction of the work is disputed. Some art historians identify