Cookie Lee 3 Strand Necklace

Cookie Lee 3 strand in one necklace. Filigree ornamental designs adorn each long strand with a rhinestone key in the middle. Never wore. Not sure where this is from, my mother gave this to me (I never wore it). But she never wears jewelry herself. Like new condition. 18 inches with 5 inch extender at shortest chain where it closes. Length of necklace in pic.