1 Onza 'Libertad'

The Libertad series was introduced in 1981 as Mexico's answer to the Krugerrand and Maple Leaf, giving the Casa de Moneda a competitive bullion product during a decade when sovereign gold coins were rapidly displacing private-bar holdings among retail investors. Unlike most major bullion coins, the Libertad carries no face value — a deliberate policy choice that freed the mint from the legal complications of denominating a coin whose metal content would inevitably exceed any printed figure.

The 1991–1994 window saw relatively modest annual mintages, making these dates meaningfully scarcer in the secondary market than the series' later runs.