Actually, I think I found it...
a Tallero from Croatia. Looks to have been minted between 1731-1735
https://en.numista.com/catalogue/pieces129767.html
If it's real, it's pretty cool
ETA: I think it's not real...the real one would be silver and not bronze colored....if it IS real then it's from 1735, which would be by FAR my oldest coin