ANTONINVS AVG PIVS P P TR P XXI (Translation: Antoninus Augustus Pius, Pater Patriae, Tribunicia Potestate Prima Vicesima. Antoninus Pius, emperor (Augustus) father of the nation, holder of tribunician power for the 21st time.)
Reverse description
Genius, standing left, holding patera in right hand and corn-ears in left.
Reverse script
Latin
Reverse lettering
COS
IIII (Translation: Consul Quartum. Consul for the fourth time.)