1985 $100 Mexicano

Before the revaluation of the peso, that coin was worth 3.333 cents. When revaluation occurred, the exchange rate was roughly 3000 pesos to the dollar, so they just took 3 zeros off. The coinage was demonetized at revaluation

You couldn't give the $100 coin away if you tried. Now, way back when, when I was a starving college student, I would buy the old 1 peso coins by the bag, and sell them to other students at 10 for a buck. They worked great in the laundry machines on campus, and off....

I hated having pockets of those bleeping $100's. They're heavy, and people loved to give you piles of 'em in change.

I just checked. The peso traded at 3119.15 pesos to the dollar on the day before revaluation.