Do you think the "1659" is the date of this coin?
It appears to be the most recent date, yes. There's an earlier date also visible, 1636. Even that earlier date appears to be a counterstamp; I'm not sure what the actual date the coin was originally made would have been.
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