100 Pesos Aguascalientes

Part of Mexico's ambitious "Estados de la República Mexicana" series, which ran from 2003 to 2009 and eventually covered all 31 states plus the Federal District. Each issue was struck in two versions — a circulating bimetallic and a collector proof — with the silver-core bimetallic representing an unusual hybrid: a coin with genuine precious metal content that nonetheless entered everyday commerce. Aguascalientes, one of Mexico's smallest and least-populated states, derives its name from the thermal hot springs discovered by Spanish settlers in the sixteenth century.

KM#721 places this firmly in the middle run of the series.