A nice pair but I am not sure if the ear part on the right is original, they look different sizes, but again I am probably wrong! An help appreciated regards Allan
Hm a little tough to see the settings but from what I can see, plus marked "SILVER" and not 925, then I'd say they're 20/30s and not 90s. Yes, probably would have had ear wires originally but not difficult to convert back if preferred.
The screwback tops aren't without their fans though, so if you decide to convert these back, hang onto those tops.
I believe the screw tops aren't both original. One has a flat "pad" on the part that touches the ear and the other has a ball shape. But I'd keep them as they are if you are going to sell them. If you plan to wear them, please keep the old tops. Just a question, the flower pieces on the bottom seem to be a different tone than the rest of the earrings.