@DJB2016, first welcome to CCF.
Second, I agree with @broken-coin about the olive oil. There is some encrustation which is covering up the inscriptions. I can recognize a Roman Numeral three in the first pic---that is most likely the denomination of this coin. One the back, I can make out "DG PO", which suggests to me that it is from one of the German City States, Poland, the Holy Roman Empire, etc.
If you can post new pics with more detail, someone here should be able to give you more info.
"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