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
Mozambican metical Mozambican metical The metical (plural: "meticais") is the currency of Mozambique, abbreviated with the symbol "MZN" or "MT". It is nominally divided into 100 centavos. The name "metical" comes from Arabic ("mithqāl"), a unit of weight and an alternative name for the gold dinar coin that was used throughout much of Africa until the 19th century. The metical (MZM) replaced the "escudo" at par on 16 June 1980. It was divided into 100 "centavos". The metical underwent severe inflation. After the revaluation of the Romanian leu, the metical briefly became the least valued currency unit, at a value of about