For those times when you want to focus solely on the Mexican coinage of the 20th century, there's the just released 2012 Coins of the World 1901-2000: Canada download.
Whether it's centavos from Chichuahua or Pesos from Oaxaca, you'll find them all, and every other coin from Mexico in this easy-to-use download. As you open this download you'll find detailed descriptions and current values for every 20th century coin, of every state in Mexico, and that's not all.
With this easy-to-use download you can search by keyword, or click on chapters within the index to go straight to the first page of a specific section. Plus, you have the ability to enlarge each page several percent to give you a closer view of descriptions and coin illustrations.
This download is Mac and PC compatible.