Marcus Aurelius 161 - 180 AD. AE-Dupondius 176 - 177 AD. Rome. 15.14g. 

M ANTONINVS AVG GERM SARM TR P XXXI, radiate head right
IMP VIII COS III P P, Trophy, at base a seated Sarmatian woman and man, DE SARM in ex. 

RIC 1186. 

Contributed by quadrans of the Forum Ancient Coins, Nov, 2013