Interesting factoid…
Despite the incredibly shrinking peso (I doubt I’d ever see 10 to the dollar, as I did when I first came here 15 years ago, and even getting back to a respectable 12 -14 to the dollar is a pipe dream), Mexico’s currency is still one of the most important on the planet: more money changes hands in Mexican pesos than in Chinese Yuan:
The Mexfiles has never expected to turn a profit, but personal funds only go so far. Miscellaneous expenses (telephone, internet connection, subscriptions, spyware, hardware repair, etc.) run about 600 pesos (35 US$) a month, and donations are gratefully accepted. Please note that your donations are in Mexican Pesos (18 pesos to the US Dollar as of February 2019). A 25 US$ donation is 450 pesos.
The background of Mexican anti-clericalism and the "atheist" general who led the Catholic counter-revolution of the 1920s 128 pp., Editorial Mazatlán, 2012.
An oral history of the World War II experiences of Gilberto Bosques (1894 – 1997), Mexico 's Consul General in Marseilles, France, who saved tens of thousands from the Nazis. 36 pp. Editorial Mazatlán, 2007 $35 MXP (click the image)
The Mex Files 
8th currency ? unbelievable