Postage stamps and postal history of Mexico The regency had previously changed the official currency under which one peso equaled 8 reales to a decimal system in which one peso equaled 100 centavos. In making the conversion postal rates were rounded up, for example, the rate of one real being equal to 12.5 centavos was rounded up to 13 centavos. The stamps, as a result, were issued in values of 7c, 13c, 25c, and 50c. These stamps were issued with the year and invoice number and with or without the district name, but some issued in exchange for Eagle stamps were issued only with the Mexico City
Euro gold and silver commemorative coins special coin: the €100,000 Vienna Philharmonic, only 15 coins minted. Austria uses mainly gold and silver for its collectors' coins. However, since 2003 a special bimetal coin, €25 face value, has been minted using silver and colored niobium, giving this set of coins a unique characteristic, since they have different color variations every year. With the exception of the 2004 Vienna Philharmonic coin and the recently introduced 2008 silver €1.25 Vienna Philharmonic, there is no variation in the number of issues when sorted by face value, from €5 to €100 there is a similar number of issues every year. A