online where I can find the value of pre-1957 silver coins in Mexico?

Or that I tried to learn about the current value of coins Mexicon money no luck.

This link may be helpful. If they are very old, you might need to find a copy of the Standard Catalog "of the world currencies, which could be found in your local library.

SILVER:Why Buy Silver Now+ Buying Silver Coins+Robert Kiyosak