I recently came across this old coin. I'm not a collector so I tried using one of the coin identifier apps. It came up empty on this one. The coin is just under 1" in diameter:
The coin looks like a modern imitation of a Macedonia, Philip II (BC 359-336) Tetradrachm.
Here's a real one from coin dealer Harlan J. Berk website's:https://www.hjbltd.com/#!/inventory/item-detail/ancient-coins/104821
Definitely a copy. Probably made for the tourist trade.
Thanks Willie and Greenstang....I suspected as much but didn't have the expertise to prove it.