100 Pesos Commemorative Coin of the Southeast Railway

The Ferrocarril del Sureste, completed in 1950 under President Miguel Alemán, linked Mexico City to the Yucatán Peninsula for the first time by rail — a project that had been stalled for decades by the difficult terrain of the Tehuantepec Isthmus and chronic underfunding. This commemorative is part of Banco de México's long-running bimetallic series honoring Mexican infrastructure and heritage, which has produced dozens of 100-peso pieces since the early 2000s using the same .925 silver center format.

The Southeast Railway was nationalized along with Mexico's other major lines in 1937 under Cárdenas, then folded into Ferrocarriles Nacionales de México.