To control inflation, during 1992-93 Mexico replaced its peso with a "nuevo peso" (new peso) at the rate of 1000-1. Thus your old bill is only worth 2 new pesos or about 20 cents.
The value of a 1982 Mexican twenty dollar coin is $2. Mexico changed the value of its currency from 1992 to 1993 and the exchange rate became a 1 to 1,000 exchange rate.
A mint uncirculated note is worth $25. Very Good condition drops to $2.
There is no such thing as a "dollar peso". Mexico uses the "$" sign to mean peso, and they're 2 different currencies. Mexican currency was devalued in 1992 at the rate of 1000 old pesos to one new peso, so your coin is actually worth only 5 centavos at current rates. That's less than a penny.
2
0.197404 U.S. dollars ==
A 1958 Mexican Peso contains .0511 of an ounce of silver and may be worth up to about $2. You might also try a library for a copy of the Standard Catalog of World Coins for pictures, values and lots more interesting info.
A mint condition uncirculated 1959 100 Peso note is worth $25, dropping to $2 for a crisp circulated one in Very Good condition.
About 14 different countries use 'Peso' as their unit of currency and the value would depend on the age and condition, so this question is impossible to answer accurately. The 'Mil' in the value just means 1000. If the note is from Mexico and from about 1985, then a mint condition note would be worth $2 to a banknote collector. A modern, 2002 or later, Mexican 1000 Peso note in any condition is worth $78 in any bank.
2 cents in US dollar.
There is no such coin ... do you mean a centavo or a peso or something else?
$30 in Extra fine condition.