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
Portuguese escudo Portuguese escudo The Portuguese escudo is the currency of Portugal prior to the introduction of the euro on 1 January 1999 and its removal from circulation on 28 February 2002. The escudo was subdivided into 100 "centavos". The word "escudo" means "shield". Amounts in escudos were written as "escudos" $ "centavos" with the "cifrão" as the decimal separator (e.g. "25$00" means $25.00, "100$50" means $100.50). Because of the conversion rate of 1000 réis = $1, three decimal places were initially used ($1 = 1$000). Escudo gold coinage was initially introduced in 1722 with denominations including escudo, 2, 4, and 8