Dupondius - Antoninus Pius (COS IIII)
Technical Details
Obverse Lettering
ANTONINVS AVG PIVS P P TR P XI
Reverse Lettering
COS IIII
Comments
Example of this type:
Münzkabinett, Staatliche Museen zu Berlin (CC BY-NC-SA)
Source:
Online Coins of the Roman Empire (OCRE)