Obverse: Antoninus Pius, bare head, right. IMP CAES T AEL HADR ANTO NINVS AVG PIVS P P IMP[ERATOR] CAES[AR] T[ITVS] AEL[IVS] HADR[IANVS] ANTONINVS AVG[VSTVS] PIVS P[ATER] P[ATRIAE] The Emperor Caesar Titus Aelius Hadrian Antoninus Augustus Pius Father of the Fatherland
Reverse: Pax standing left, holding olive branch and scepter. TR POT XIIII COS IIII, PAX (in exergue) TR[IBVNICIA] POT[ESTAS] XIIII CO[N]S[VL] IIII, PAX Invested of the tribunician powers for the fourteenth time, Consul for the fourth time, Peace.
Antoninus Pius reigned as Emperor between 138 and 161 AD, succeeding Hadrian in the dynasty of the Adoptive Emperors. His reign was characterised by peace, prosperity, and harmony. He reigned remaining mostly in Italy, in stark contrast with the extensive travels of his predecessor, and a sign that the consolidation of the cultural and political fabric of the Empire carried out by Hadrian had been successful. After his death he will be deified by the Senate, along with his wife Faustina. Their temple still adorns the Roman Forum.
This coin was struck in the year when Antoninus held the tribunician powers for the fourteenth time, and the consulate for the fourth time. The tribunician powers were a device inherited from the Republican constitutional system, which gave emperors power to veto bills approved by the Senate, and inviolability of their persons. In the case of Antoninus Pius, these powers were renewed yearly by the Senate, allowing us to date with certainty to AD 150 - 151.