Research on my part, trying to match up a 4-6-4 configuration steam locomotive has yielded no results as of yet. In the early 20th century, the railways (ferrocarriles) in Yucatan were used mainly to carry freight from the plantations to the ports on the peninsula, and were not connected to the lines in the rest of the country. In the 1930's, under the Lazaro Cardenas administration, a huge infrastructure project was initiated to link the nation's railways to the isolated Ferrocarriles Unidos de Yucatan. The result, the Ferrocarril del Sureste (Southeast Railroad) was completed in 1950 and inaugurate by then-president Miguel Aleman. The event was commemorated on a 5-Peso coin of 1950 I am hoping somebody with an eclectic mind, might be able to help ID the beautiful Locomotive. Sadly, this is not mine.