Vintage Mexico Sterling Earrings with Onyx? Screw-Back for unpierced ears
These are from the 20's - mid 40's. Mexican silver jewelry of the time was usually 925 or better. I don't know the exact fineness of these.
Good condition with maker flaw. There one side of the stone on one earring has an unpolished area. This looks like it was during the creation process. There is typical wear from age and polishing. See photos for detail. Great natural patina!