This is a large, 2.5" diameter, pendant, decorated on both side with the Metales Casados, (married metals) technique. The precolumbian style figures are fashioned from silver, brass, and copper and the ground turquoise stone is the background. Collected in the late 1950s, there is a bit of loss to that background. It is signed on the pendant holder with the Mexican hallmarks and the makers mark of MCF. See pics. Email questions.