Hello and welcome.
And I would have to agree - it's a modern brass "tourist piece". I have seen several similar items posted on the forum previously, that were bought in Italy in the mid-1900s. For this particular piece, the obverse is Roman, but the reverse is taken from a Greek decadrachm of Syracuse - an impossible combination for the same coin.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis