This coin is absolutely, definitely, positively not a genuine ancient coin, sorry.
The anceints weren't silly enough to make copper and silver coins with the same design - even they would have realized that doing so would have merely made a counterfeiter's job easier.
Further, besides the very "mushy" appearance that's distinctive of a cast replica, the "patina" on this coin is simply wrong. A genuine ancient copper coin has a deep, crusty patina with no raw metal showing underneath it. This coin is raw metal, except for a light dusting of verdigris.
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