Dollars Pictures

Another explanation is that this symbol for peso was the result of a late 18th-century evolution of the scribal abbreviation "ps." The p and the s eventually came to be written over each other giving rise to $.
A fictional possibility suggested is that the dollar sign is the capital letters U and S typed one on top of the other. This theory, popularized by novelist Ayn Rand in Atlas Shrugged, does not consider the fact that the symbol was already in use before the formation of the United States.