I will try to add a picture of the earrings from side and or back view.. I don't recall what or if I saw markings. The "backs" are not originals. They are replacements & gold color but not gold.
I don't see markings on the posts. they don't react to a strong magnet. The backs are not gold & kinda cheap. I will see if I have better ones & put them on. Let you know if I find out more. Thanks.