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
Euro gold and silver commemorative coins unique piece in the Austrian collection is the Vienna Philharmonic coin. This coin is struck in pure gold, 999.9 fine (24 carats). It is issued every year, in four different face values, sizes and weights. It is used as an investment product (bullion coin), although it finishes almost always in hands of collectors. According to the World gold Council, it was the best selling gold coin in 1992, 1995 and 1996 worldwide. Since 1 February 2008, this coin is being minted in silver as well. Both sides of the coin feature the same as on the Vienna Philharmonic pure gold