Haskell Necklace & Earring Set

by Ken
(California)

Hello there,

I have a signed Miriam Haskell necklace and earring set, and was wondering if you could tell me what vintage it is and what a general appraisal value might be. It's signed on the back of the necklace's clasp and on the clasp. The earrings are also signed on the back of the screw-in posts.

Thanks!