Vintage Mexico Abalone Shell Black Enamel Post Earrings

This is a vintage pair of Mexico post earrings with abalone shell on the top, in front of the post, and inlayed within the drop earrings. The back is a copper with the Mexico engraved on the surface. These appear to have been hand crafted. Please review the photos as they are a part of the description. Length with post - 2 1/4 Inches. Width - 1 5/8 Inches. Pre-owned. #1466