The letter S appears nowhere in the word “dollar”, yet an S with a line through it ($) is unmistakably the dollar sign. But why an S? Why isn’t the dollar sign something like a Đ (like the former South Vietnamese đồng, or the totally-not-a-joke-currency Dogecoin)?
There’s a good story behind it, but here’s a big hint: the dollar sign isn’t a dollar sign.
It’s a peso sign.