Antique Gold Tone Brass? Long Chain Necklace

I am looking for information on this very long chain necklace. It is a curb link style, but with added sections that make it look kind of like a scallop design. It is not signed. I am looking for any information anyone might have: what to call the style, age, basically anything that anyone can tell me about it. It's heavy, weighing approximately 67.12 grams. Looking forward to your responses. Thank you for any help you may be able to provide.