"Una Onza Troy de Plata Pura" is Spanish for "One Troy Ounce of Pure Silver". I think that you're asking about the Mexican "Onza" coin, although it has only been issued since 1982, which contains 1 troy ounce of silver and trades at its bullion value (although some dates trade at a small premium if they are in Brilliant Uncirculated or Proof condition).
Q presio tiene la onza de plata pura
The value of a 1928 Mexican centavos coin depends on the denomination and condition of the coin. The typical value is between 6 and 65 US dollars.
centavos 1954 coin
no such coin
1967 centavos coin worth
i just sold my 1991 juan calos coin to a serious coin collector and he bought it for 16,500 dollars
$2125.00
$60-80
No Mexican peso notes were issued in 1882. Maybe it's a coin?
50 cents
$0.33-$0.50
about 43 dollars
Nothing just like all things Mexican