On the obverse legend there is ANTONIN Which is short for ANTΩNINOC. So, it's not Trajan Decius or Philip I or II. Starting with Antoninius Pius and all the way but probably not later than Elagabalus. I suspect that the coin might be Caracalla. What legend I can see looks like ESMΛ(A) ANTONIN.
To narrow it down a little more I think it's using Latin letters instead of Greek letters. I can see "OL" on the reverse which might be "COL", colonia or colony for short.