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
Tauberbischofsheim altarpiece Tauberbischofsheim altarpiece The Taubischofsheim altarpiece (earlier known as the Karlsruhe altarpiece or Karlsruhe panels; German: Taubischofsheimer Altar, Karlsruher Altar, and Karlsruher Tafeln, respectively) is a late work by the German Renaissance painter Matthias Grünewald, probably completed between 1523 and 1525. The earliest written references to the work come from the 18th century, when the altarpiece was still in the Church of St. Martin in Tauberbischofsheim. Its original location and the identity of the patron who commissioned it are not known, but it is assumed that they both were in Tauberbischofsheim. The panels, which today are displayed separately, were originally painted