Antoninus Pius (138-161) AR Denarius (Silver, 3.26g, 18mm) Rome, 148-149.
Obv: ANTONINVS AVG PIVS P P TR P XVIII, laureate head of Antoninus Pius right
Rev: COS IIII, Vesta standing facing, head left, with patera in right hand extended over lit altar and palladium in left hand.
Ref: RIC III 238.