It is indeed a replica, of an Athenian Owl tetradrachm. I believe it was mass-produced by Readers Digest as part of a promotion for a book on ancient Greece. The distinctive "Edvard Munch eyes", and wings that look like two planks of wood, are the giveaways for this piece. If you do a forum search for "edvard munch owl", you'll find a whole bunch of people with identical "coins", where I have made the same comment. They almost always come in identical-looking plastic capsules, which is presumably how they were distributed. If one ranked the Top Ten Most Confusion-Causing Replica Ancient Coins, this one would have to be in the top three (alongside the Gelas brass tetradrachm and the fake Widows Mite).
For examples on the FORVM fakes database, see here
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