In Portrait of Bernhart von Reesen, how is the abstract discussed?
The Portrait of Bernhart von Reesen is a portrait painting by German Renaissance master Albrecht Dürer.  It depicts a man wearing a beret and holding a piece of paper against a red background.  The oil on panel painting is dated 1521 and is in the collection of the Gemäldegalerie Alte Meister of Dresden, Germany.
Dresden Gemäldegalerie Alte Meister Albrecht Dürer