Between 1960 and 1971, new coinage was introduced, consisting of brass 1- and 5-centavos, cupro-nickel 10-, 25-, and 50-centavos, 1-, 5-, and 10-pesos, and silver 25-pesos (only issued 1972). In 1977, silver 100-pesos were issued for circulation. In 1980, smaller 5-peso coins were introduced alongside 20-pesos and (from 1982) 50-pesos in cupro-nickel. Between 1978 and 1982, the sizes of the coins for 20 centavos and above were reduced. Base metal 100-, 200-, 500-, 1,000-, and 5,000-peso coins were introduced between 1984 and 1988.