Stunning antique art deco sterling rock crystal bezels open back necklace

Rare antique art deco sterling rock crystal bezels necklace .It is about 15 2/8 inches long and 3/8 inches wide .It is in good condition with patina . It is marked " sterling " on the back of first bezels (2 of them pls ask question before bidding ). Thank you for looking or buying.

eBay