Marcus Aurelius, AE sestertius, AD 170-171, Rome. 31 mm, 28 g.

IMP M ANTONINVS AVG TR P XXV, laureate, draped bust right.
FIDES EXERCITVVM around, COS III below, S-C across fields, Fides standing left, holding Victory and a standard. 

RIC 997; BMCRE 1395-1397; Cohen 199.

With permission of cngcoins.com, auction 50, Lot 209, June 1999.