Vintage ivory enamel on gold tone chunky chain link choker necklace 15 inch

Vintage enamel metal collar/choker necklace is very classic and elegant. In great condition. underside is gold, has a back clasp. Makers mark @FO? BOX/CASE NOT INC. Item is preowned/vintage and has signs of prior wear, like scuffs and scratches. We only give jewelry a light dust off so item may need cleaning and/or disinfecting if deemed necessary. Sold as is please views pics closely and ask questions. Happy to oblige! Offers/questions are not a hold however. We are not experts and if there is no maker's mark we cannot authenticate, so we rely on internet searches for such information. We ship daily! Suns/Hols exc.