Sad to say, but it is not a genuine Israeli coin. It is an imitation of an ancient Judaean coin, a silver sela (or tetradrachm) from the Second Revolt period. I do now know how old they are (though they are certainly "modern", not ancient) or where they came from, but I suspect they are sold as souvenirs on the streets of Israel. In Israel, selling genuine ancient coins to tourists is strictly controlled, but selling fake coins is perfectly OK. We've seen them on the forum before a couple of times;
here's an old thread with one, and
coin #3 here is another.
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