100 Pesos Pillar coin

This piece belongs to the long-running Mexican Numismatic Heritage bimetallic series, which Banco de México launched in 2000 to commemorate pre-Columbian and colonial monetary history. The "Pillar" in the name refers to the famous Pillar dollar — the milled eight-real coin struck at New World mints from 1732 onward, whose design became so widely trusted in global trade that it circulated legally in the United States until 1857. Spanish colonial milled coinage from Mexico City was, at certain points in the 18th century, effectively the world's reserve currency.

The .925 silver centre is a deliberate nod to the fineness of the original colonial issues it commemorates.