Antoninus Pius (138-161). AR Denarius, 145-161 AD. Obv. ANTONINVS AVG PIVS PP. Laureate head right. Rev. COS IV. Winged thunderbolt on throne (pulvinar of Jupiter and Juno). RIC 137. C. 345. AR. g. 3.49 mm. 18.00 Great metal. Brilliant and virtually as struck. FDC/About FDC.