Marcus Aurelius (161-180).     AE Dupondius, Rome mint, 177 AD.   Obv.    M ANTONINVS AVG GERM SARM TR P XXXI. Radiate head right.        Rev.   IMP VIIII COS III P P S C. Winged thunderbolt.     RIC III 1219.     10.81 g.   23.5 mm.          About VF.