Antoninus Pius Denarius, 3.59g; 18mm, 138-139 AD. Rome. 

Obv: ANTONINVS AVG PIVS P P, laureate head right
Rev: TR POT COS II, clasped hands holding caduceus and grain-ears. 

RIC 54b; RSC 873. 

With permission of Roma Numismatics, January, 2010