Mithras as archer on horseback, relief dish/platter (front side) from a Mithraem in Dieburg, Germany, late 2nd cent. CE; Dieburg, Kreis- und Stadtmuseum.
Video (in German) about the Mithrascult and the Dieburg MithräumSame image - Das Dieburger Mithräum (Museum Schloss Fechenbach)