MARCUS AURELIUS. 161-180 AD. Æ Sestertius. Struck 170-171 AD. IMP M ANTONINVS AVG TR P XXV, laureate head right. ® PRIMI/DECEN/NALES/COS III/S C in five lines within laurel wreath. RIC III 1006; BMCRE 1398; Foss 41; Cohen 497. According to Foss, Roman Historical Coins p. 138, this issue commemorates the "[tenth] anniversary of the sole reign of Aurelius, with vows to celebrate its completion, and in anticipation of another decade." Green patina with some light pitting.