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
Castello Roganzuolo Altarpiece the Diocesan Museum. Much of the work is irretrievably damaged and its fourth cymatium panel showing the dead Christ with angels is still lost. A copy of all four panels now stands in the church, in the original elaborate frame. Castello Roganzuolo Altarpiece The Castello Roganzuolo Altarpiece, Castello Roganzuolo Polyptych or Madonna and Child with Saint Peter and Saint Paul is a painting by Titian, commissioned in 1543 by the leading citizens of Castello Roganzuolo, Province of Treviso, Veneto, Italy. It is now in the Albino Luciani Diocesan Museum in Vittorio Veneto. The painting is a triptych with three narrow