1/20 Onza 'Libertad'

The Libertad gold series launched in 1981 as Mexico's answer to the Krugerrand and Maple Leaf, though the fractional denominations — including this twentieth-ounce piece — were added later as bullion investment expanded into smaller retail markets. Unlike most sovereign bullion coins, the Libertad carries no face value, a deliberate policy choice by Banco de México that sidesteps the fiction of a legal-tender denomination wildly below melt value.

The .999 fineness distinguishes it from the older 50 Pesos "Centenario," which runs at .900. Mintage figures for individual years in this fraction are not always published, making population data unreliable.