Antoninus Pius, AE sestertius. 

Obv: IMP CAES T AEL HADR ANTONINVS AVG PIVS PP, laureate head right.
Rev: TR POT XIIII COS IIII, ROMA in exergue, S-C across fields.

RIC III 875, rated rare.

With permission of Numismatik Lanz. Sold for 750 Euros.