@Matt, that's a great Trachy that you have there. I really like the detail on both sides of your coin.
Also, I agree with @echizento's attribution. The obv inscription should be something like I/CAA/KI/OC on the left of Isaac and {delta}EC / {PI}O/TH/C on the right of Isaac, although Sear mentions that there are many variations in the inscriptions.
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz