Mexico Sterling Mayan Calendar Dangle Earrings

Mexico sterling Mayan calendar earrings from the 1950s. Both upper and lower parts of these screw-back earrings feature the Aztec Sun Stone or Mayan calendar. The sterling silver earrings are stamped with an Eagle 4 and Guadalajara on the top section and a crown with Plata 925 Guadme on the lower section. They measure about 1 and 5/8 inches.
The eagle marks were used from 1948 until 1979.