Paradoxically, one of my favorite gold pieces is a 50 peso Mexican coin minted in the 1940s containing 37.5 gr "oro puro". That's nearly 1 1/4 oz. Also love the silver Libertads. Mexico has enormous natural mineral wealth, but worthless currency, like everyone else...
RE: The Mexican Peso: A Century of Currency Debasement (Part 5 – Boom and Bust)