I don't have this one in hand yet, but figured I would go ahead and post a picture. It would be a pretty common coin, except for the shield, which has a horseman leaping over a fallen enemy and the cuirass, which looks like it has a Gorgon on it. I will post a better picture when I receive the coin.
There are conflicting accounts, but according to the Iliad (which is not completely clear either), the Aegis, which was made by Hephaestus with the head of Medusa, is the shield or breastplate of Athena and Zeus. That is why Gorgons appear either on the shield or the cuirass of coins.