Taxco Mexico PA .925 Sterling Silver Swirl Abalone Inlay Old Screw-Back Earrings

These rare, vintage earrings are in good condition, with signs of wear from use, handling, storage, and age. There is damage/cracking/crackling (see dark areas) in some of the abalone inlay. There is some green oxidation on the posts (probably indicating copper-cored posts).

More info:
See photos for condition and details.