Postage stamps and postal history of Costa Rica change in currency from "Reales" to the new Pesos and "Centavos", the issue of 1863 was surcharged with new values for postal use: 1 Centavos, 2 Centavos, 5 Centavos (all over the Medio Real stamp), 10 Centavos (over Dos Reales) and 20 Centavos (over Cuatro Reales). The 5, 10 and 20 Centavos were also surcharged "U.P.U." Costa Rican stamps were issued overprinted "Guanacaste" in 1885-89 following war with Nicaragua over the sovereignty of Guanacaste. The first issue in the new "Colón" currency was dated 1900 and put into circulation in 1901. It consists of ten stamps with values ranging from
Currency of Venezuela Union system, based on the silver fuerte (venezolano de plata) of 25·000 g, 0·900 fine, and the gold venezolano of 1·6129 g, 0·900 fine. The 20-venezolano gold piece was named the "Bolívar". Coins were ordered from Paris; foreign coin was to remain in circulation until they arrived. New ratings were published July 2. From January 1, 1872 all accounts had to be converted and expressed in venezolanos and centavos. On February 13, 1874 the circulation of coin worn on both sides was prohibited and a new table of ratings for foreign coin was published. When the coinage of 1873–1874 was