As of Antoninus Pius. Minted between February 25th and July 10th 138 A.D.
Obverse: IMP T AELIUS CAESAR ANTONINVS. Bare head right.
Reverse: TRIB POT COS SC. Clasped hands, holding winged caduceus and corn-ears.
Cohen 1066 (3 Frs Or)
RIC 1088a (scarce) (Hadrian)