Guess The Emperor Revisted

Greek, 3rd century BC

None of the above.

Here's an interesting anecdote-- from wikipedia, not sure of the veracity.


According to a story told by Vitruvius, [the king depicted on this coin] suspected he was being cheated by the goldsmith to whom he had supplied the gold to make a votive crown for a temple. He asked Archimedes to find out if all the gold had been used, as had been agreed. Archimedes, on discovering the principle of displacement needed to measure the density of the crown is said to have shouted "eureka, eureka!" while running naked through Syracuse. Vitruvius concludes this story by stating that Archimedes' method successfully detected the goldsmith's fraud; he had taken some of the gold and substituted silver instead.

Hiero?

Never would have gotten that one, nice coin.

Commodus

Marcus Aurelius

How about this one