Set of 4 Vintage Ladies Bifocal Eyeglasses & Cases Nine West Frame Retro 90s 80s

This fun set includes four pairs of women's bifocal eyeglasses. They date from the 1980s-1990s era. One pair is marked "Maryland Purple". One has a pink to brown ombre. They all have open, unframed bottoms. One pair is a Nine West brand with Nine West case. I do not know the magnification. The are in pre-owned condition with some signs of wear. Frames are in really nice condition and not broken. Lenses may have light scratches.