Marcus Aurelius sestertius. 

M ANTONINVS AVG GERM SARM TRP XXXI, Laureate head right 

IMP VIII COS III P P S C, Pile of arms, DE SARMATIS in ex. 

RIC 1190, Cohen 174, BMC 1601.

From the Curator's collection, acquired July, 2000, from John Jencek at an SFANS club meeting for $68.