Current price 1959 veinte pesos gold coin?

Answer 1

Assuming that you are referring to a 20 Peso gold coin from Mexico dated 1959, it is most likely that you have a restrike (only 13,000 were produced in 1959, but over 1,000,000 - dated 1959 - were produced in the decade that followed). It would appear that it has little value over the gold value, which is about US$453 as of the end of July 2009 (the coin contains 0.4822 troy ounces of gold). If it is in uncirculated condition, you should see a coin dealer (preferably one who specializes in Mexican coins), as there may be a premium over the gold value.