100 Pesos Querétaro - Gold and Silver Proof Issue

Part of Banco de México's long-running state series commemorating the 31 federal entities, this issue marks Querétaro — the state where the Mexican Constitution of 1917 was drafted and signed, making it arguably the single most consequential location in twentieth-century Mexican political history. The series as a whole ran through the mid-2000s and attracted serious collector interest for the technical difficulty of the bimetallic proof format, which requires precise die alignment between two dissimilar metals struck in a single operation.

Mintages for individual state issues in this series were tightly controlled, with proof strikes typically limited to a few thousand pieces.