Peso signA peso sign is a currency symbol used by a number of countries around the world., the peso sign in Unicode,, is used only by The Philippines. All the others use, which is also known locally the peso sign.History of the $ as a peso signThe Spanish dollar coins provided the model for the currency that the United States adopted in 1792, and for the larger coins of the new Spanish American republics, such as the Mexican peso, Argentine peso, Peruvian real, and Bolivian sol coin: "the famous dollar sign is a reversed and slightly modified Spanish peso sign".