Superb reverse treatment of captives, trophy and arms. A likely reference to the Emperor's major victory over Parthia at the Battle of Ctesiphon, 198 CE, when the Roman Legions sacked the Parthian capital.
Certified by NGC to Ch AU, colorfully toned with underlying luster.
Obverse: SEVERVS PIVS AVG, laureate head of emperor right.
Reverse: PART MAX P M TR P VIIII, Two captives wearing helmets with hands to chin seated right & left, back to back with trophy of arms between. Trophy consists of full cuirass with helmet, shields, spears, etc.