Dollar sign - Wikipedia
https://en.wikipedia.org/wiki/Dollar_signThe dollar sign, also known as peso sign, is a symbol consisting of a capital "S" crossed with one or two vertical strokes ($ or | |), used to indicate the unit of various currencies around the world, including most currencies denominated "peso" and "dollar".The sign is also used as an element of several compound currency symbols, such as the Brazilian real (R$) and the Nicaraguan …