Antoninus Pius, 138-161. Denarius (Silver, 18mm, 3.4 g), Rome, 150-151. IMP CAES T AEL HADR ANTONINVS AVG PIVS P P Laureate head of Antoninus Pius to right. Rev. TR POT XIIII COS IIII / TRANQ Tranquillitas standing facing, head right, holding rudder in right hand and grain ears in left.