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
Digital gold currency use of the digital currency for daily monetary transactions, even though most of their normal income and expenses are denominated in the national currency of their home country. Fluctuations in the value of gold against their national currency can create some confusion and difficulty for new users as they see the "value" of their DGC account fluctuate in terms of their native currency. In contrast to exchange risk, caused by gold's fluctuation against national currency, the purchasing power of gold (and therefore DGCs) is measured by its fluctuation against other commodities, goods and services. Since gold has historically been the