Hello and welcome. Sorry to be the bearers of bad news, but it's 100% certain that your coin is not, actually, a real coin.
Quote:
(I could swear I've seen one of those with an owl just like that somewhere...)
You have probably seen it right here on this forum. We have seen this particular replica many, many times over the years.
I believe they were issued by Readers Digest, or some similar mass-marketeer of books, to promote a book they were selling on ancient Greek history. They often seem to come in that exact same plastic capsule, so I assume that's how they were distributed. The telltale signs of this particular replica, for me, are on the reverse which is much more crudely rendered thant he obverse: the owl's wings have been reduced to two flat planks, and the face and eyes are twisted and assymetrical, like some kind of Edvard Munch painting.
Some threads with examples:
http://goccf.com/t/231047http://goccf.com/t/193180http://goccf.com/t/74453To see what your coin is "supposed to look like", try the top coin on the
Wikipedia article on tetradrachms.
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