18kt gold plated rhinestone cubin necklace vintage

18” rhinestone vintage cubin necklace is very heavy and has slide in clasp with one closure missing, but stays latched. One side is full of rhinestones and I can’t find any missing. The other side is good plated link chain. Necklace is vintage and it does twist and shows tarnish. Unable to identify maker but it is signed. Please note there is tarnishing to chain links. See all photos.