Antoninus Pius AR Denarius 17-19mm; 3.34g. AD 139. 

ANTONINVS AVG PIVS P P, bare head right
TR POT COS II, Libertas, draped, standing left, holding 
pileus and vertical rod.

RIC 50a; BMCRE IV 103.

With permission of cngcoins.com, the AK Collection.