Marcus Aurelius. The inscription on is coin is M ANTONIUS AUG IMP II which means Marcus Antonius Augustus Imperator II. The coin was struck 162 A.D.
When Marcus Aurelius became Caesar in 161 A.D. he named his brother Lucius Verus as an equal and designated him as co-Caesar and Augustus. As peaceful as the reign of Antonius Pius was, we find the opposite in the reign of Marcus, as if the gods were blocking him from pursuing his life’s calling as a peacemaker. Immediately there were attacks in the east and the north followed by invasions and plague. Verus, showing himself a worthy partner, fought the Parthians from 162-166 A.D. but then his troops brought the plague home with them. The emperors went north to fight the Germans in 168 but Verus died of a stroke in 169. Marcus fought the Germans from 170-175, returned to Rome for three years, and then attacked the Germans again starting in 178 A.D. He died there in 180 A.D.