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
Gold standard can be removed. Commodity money retains its value despite what may happen to the monetary authority. After the fall of South Vietnam, many refugees carried their wealth to the West in gold after the national currency became worthless. Under commodity standards currency itself has no intrinsic value, but is accepted by traders because it can be redeemed any time for the equivalent specie. A US silver certificate, for example, could be redeemed for an actual piece of silver. Representative money and the gold standard protect citizens from hyperinflation and other abuses of monetary policy, as were seen in some countries