Mars, helmeted, standing right in combative attitude, holding spear in right hand and shield in left hand.
Reverse script
Latin
Reverse lettering
PONTIF
TR P XI COS III S C (Translation: Pontifex [Maximus], Tribunicia Potestate Undecima, Consul Tertium. Senatus Consultum. [High] priest, holder of tribunician power for the eleventh time, consul for the third time. Decree of the senate.)