Mexican Sterling Silver Sun God Abalone Pin/Pendant .925

This is a Mexican Sterling Silver Sun God pin/pendant dating from the 70's. Inlaid with iridescent abalone shell. Stamped on the back with Hecho en Mexico .925 and a bell with the number 2. There are initials inside the circle but I can't tell if they are CP or GF. Has pendant bail and pin fastener so it can be worn as both. Measures about 2.25" Very good vintage condition.