. "The Heller Altar was an oil on panel triptych by German Renaissance artists Albrecht D\u00FCrer and Matthias Gr\u00FCnewald, executed between 1507 and 1509. The artwork was named after Jakob Heller, who ordered it. D\u00FCrer painted the interior, Gr\u00FCnewald the exterior.In 1615, D\u00FCrer copyist Jobst Harrich painted a duplicate, which is now at the St\u00E4del of Frankfurt. The side panels, executed by Bosch's workshop basing from his drawings, are at the Staatliche Kunsthalle of Karlsruhe."@en . "Heller Altar"@en . . .