Mexican peso
The Chicago Produce Exchange was established in 1874, renamed the Chicago Butter and Egg Board in 1898 and then reorganised into the Chicago Mercantile Exchange (CME) in 1919. Following the end of the postwar international gold standard, in 1972 the CME formed a division called the International Monetary Market (IMM) to offer futures contracts in foreign currencies: British pound, Canadian dollar, German mark, Japanese yen, Mexican peso, and Swiss franc.