Vintage Miriam Haskell Milk Glass Swirl Earrings

Beautiful Miriam Haskell screw clip, milk glass, swirl earrings. Signed on the arm of the clip and at the base of the screw. Patent Number on the inside screw dates the piece to the mid 60’s. (Patent No. 3.176.475). The brass (I think) prongs are an intricate design element. In very good condition. I have not cleaned the piece , so there is some tarnishing. Simple but elegant. Authentic Miriam Haskell. Only serious offers considered.