Antoninus Pius Dupondius, 11.85 grams, 25.16 mm. Rome. 155-156 AD.  

Obverse: ANTONINVS AVG PIVS P P TR P XIX, radiate head right.
Reverse: LIBERTAS COS IIII S-C, Libertas standing left, holding 
pileus and sceptre.  

RIC 950; Sear (1988) 1283; cf Sear5 4279 (year).

Courtesy of TimeLine Originals (www.time-lines.co.uk), Apr. 2010