Caribbean guilder
The Netherlands Antillean guilder will continue to circulate and plans to implement the Caribbean guilder will not be finalized until the islands' Central Bank situation is resolved. The new currency will be abbreviated CMg (for Curacao, Sint Maarten guilder) and would be pegged to the United States dollar at the same exchange rate as the Netherlands Antillean guilder (1 USD = 1.79 NAg = 1.79 CMg). As the BES islands (Bonaire, Sint Eustatius and Saba) adopted the U.S. dollar directly on 1 January 2011, the introduction of the CMg would mean the end of the circulation of the Netherlands Antillean guilder.
Mexican peso
The 18th and 19th century Spanish dollar and Mexican peso were widely used in the early United States. On July 6, 1785, the value of the United States dollar was set by decree to approximately match the Spanish dollar. Both were based on the silver content of the coins.
The first U.S. dollar coins were not issued until April 2, 1792, and the peso continued to be officially recognized and used in the United States, along with other foreign coins, until February 21, 1857. In Canada, it remained legal tender, along with other foreign silver coins, until 1854 and continued to circulate beyond that date. The Mexican peso also served as the model for the Straits dollar (now the Singapore/Brunei Dollar), the Hong Kong dollar, the Japanese yen and the Chinese yuan. The term Chinese yuan refers to the round Spanish dollars, Mexican pesos and other 8 reales silver coins which saw use in China during the 19th and 20th century. The Mexican peso was also briefly legal tender in 19th century Siam, when government mints were unable to accommodate a sudden influx of foreign traders, and was exchanged at a rate of three pesos to one Thai baht.