Two captives, seated back to back, mourning, left and right of central trophy.
Reverse script
Latin
Reverse lettering
PART
MAX PONT TR P V COS (Translation: Parthicus Maximus, Pontifex [Maximus], Tribunicia Potestate Quinta, Consul. The greatest conqueror of the Parthians, [high] priest, holder of tribunician power for the fifth time, consul.)