Currency of Uruguay and fineness was retained, but the denomination was changed to "peso fuerte", with proposed coins of 1/8, 1/4, 1/2, and 1 peso fuerte in silver, and 2, 4, 8, and 16 pesos fuertes in gold. Uruguay's first postage stamps appeared in October 1856 for use on mail coach routes operated by Anastasio Lapido; the denominations were 60 and 80 centavos and 1 real (= 120 centavos). A second series followed in March 1858 in denominations of 120, 180, and 240 centavos (centésimos). Regular government stamps appeared in July 1859 in denominations of 60, 80, 100, 120, 180, and 240 centésimos.
Gold standard Congress on March 3, 1903. Around the same time Mexico and Japan pegged their currencies to the dollar. When Siam adopted a gold exchange standard in 1908, only China and Hong Kong remained on the silver standard. When adopting the gold standard, many European nations changed the name of their currency, for instance from Daler (Sweden and Denmark) or Gulden (Austria-Hungary) to Crown, since the former names were traditionally associated with silver coins and the latter with gold coins. Governments with insufficient tax revenue suspended convertibility repeatedly in the 19th century. The real test, however, came in the form of