50 cents. It is a magician's coin. Search the threads here at CoinTalk. (There are PLENTY of threads here about magician's coins.)
No reason to be sorry. You learned something and that is what is important? Now, do you understand how it was made?
Great! I once saw a nickel like that, I asked for it- got it, and almost sold it for a lot of money! Good thing I figured that out.