Not silver. After the 1968 Olympic games issue, only the one in 1977 of circulating pesos, (cannot remember the denomination, 100?), and a couple of bimetallic issues have any silver in them for circulating coinage. Even the pesos from the late 50's-early sixties so popular on Ebay are just thinly washed silver.
rub on a clean white cloth leaves a black residue and theres a 1978 silvers based on my research they are worth a little over face value.. ranging from 1-2bucks here lol
From Wikipedia: "Between 1960 and 1971, a 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, 1000 and 5000-peso coins were introduced between 1984 and 1988." I wish these pesos were silver, I have tons of them from junk lots sitting in bags.
you never know if they can be a silver planchet error ill take it for a test at the jewelry store,, i got loads of silver, gold, and plat to pawn in
