Antoninus Pius (138-161). AR Denarius, Rome mint, 153-154. D/ ANTONINVS AVG PIVS P P TR P XVII. Laureate head right. R/ COS IIII. Veiled and draped Vesta. standing left, holding simpulum in extended right hand and palladium at shoulder in left. RIC III 229A. 2.92 g. 20 mm. Lightly toned. Irregular flan. EF.