Invasion 4 Real
Mar. 20th, 2019 03:50 pm
A silver Mexican 4 Real coin from 1847: the year the United States Army invaded Mexico, captured Mexico City, sent the government into exile, and occupied many of Mexico's strategic cities and state capitals.
Although some in the U.S. Congress wanted to annex the whole country of Mexico (which historically is what most invaders did to the lands they conquered), President Polk's specific territorial designs were to acquire the Mexican states of Alta California and Nuevo Mexico – both of which had already been seized early in the Mexican-American War. The U.S. ended up paying Mexico $15 million for the lands which would eventually become five states and portions of four others.

The former Mexican state of Alta California in 1849.
In the immediate aftermath of the war, the political status of what was then called Upper or New California was in limbo. It was no longer a part of Mexico, but it wasn't a formal U.S. territory yet, either. The discovery of gold in western New California soon after the Americans took over complicated matters of governance even further.
Back to the coin: Mexican money was still in widespread use in California during the Gold Rush. This 4 Real had basically the same silver content as a U.S. half dollar. Americans in California at the time would have referred to both coins as "4 bits," and accepted the Mexican specie in trade just as readily as an American half. Even after California achieved statehood, Mexican silver coins like this 4 Real remained in general circulation alongside American money for many years to come.