it is worth about $0.00 dollars
It's worth $49.98
Any peso dated before 1993 is now worth nothing, i have a bunch of 1000 pesos notes from 1983 and when i went to exchange it, i was told that its worth nothing, that was a bummer.
Well, 100 (Mexican) peso bill would be worth... 100 Mexican pesos (which is the currency they use in Mexico!) assuming it was after 1993, if the bill was before 1993 it would be worth 1/10th of a Mexican peso (since the New Peso was introduced in 1993 which 1 new peso is equal to 1000 old pesos)
20000 Pesos is worth about $1,858 USD However, if you have a coin or bill of this denomination, it is probably in "old pesos". It takes 1000 old pesos to equal 1 new peso, so the actual exchange rate is $1.85. [Note - there are some 8 countries using currencies called pesos. This answer probably refers to the Mexican peso.]
less than $2
A 1962 cien pesos Bolivianos and a mel pesos can be worth up to 100,000 dollars. This all depends on what shape the bill is in.
As of today (01APR2011), 1,000 Mexican Pesos (MXN) is worth about $48.84 US Dollars.
Any peso dated before 1993 is now worth nothing, i have a bunch of 1000 pesos notes from 1983 and when i went to exchange it, i was told that its worth nothing, that was a bummer.
Well, 100 (Mexican) peso bill would be worth... 100 Mexican pesos (which is the currency they use in Mexico!) assuming it was after 1993, if the bill was before 1993 it would be worth 1/10th of a Mexican peso (since the New Peso was introduced in 1993 which 1 new peso is equal to 1000 old pesos)
draifish
20000 Pesos is worth about $1,858 USD However, if you have a coin or bill of this denomination, it is probably in "old pesos". It takes 1000 old pesos to equal 1 new peso, so the actual exchange rate is $1.85. [Note - there are some 8 countries using currencies called pesos. This answer probably refers to the Mexican peso.]
3000
Mexico experienced runaway inflation during the late 1980s and by 1992 was forced to withdraw all bills and coins because they were becoming effectively worthless. They were replaced with "nuevo pesos" (New Pesos) at a rate of 1000 old = 1 new. Unfortunately that means your bill is only worth 1 new peso, which is about 10¢ U.S. at current exchange rates.
less than $2
A 1962 cien pesos Bolivianos and a mel pesos can be worth up to 100,000 dollars. This all depends on what shape the bill is in.
A 50 Nuevos Pesos bill is selling on eBay for $2.00 as of July 18, 2013. When you convert 50 Mexican Pesos to United States dollars, it is worth $3.98.
1000000000
The 1987 Dos Mil Pesos bill from Mexico is no longer in circulation and has been demonetized, so its face value is zero. However, some collectors may be interested in it and its worth would depend on factors such as its condition and demand among collectors.