The package at the bottom left is the trembler. The mark doesn't quite look like the same "LC" mark I've found, and can't find another mark like it, with the "C" inside the "L. Thank youl. Pretty sure thats a recent mark.
Researching Costume Jewelry History, Companies and Signatures -“C”
4 Ways to Identify Antique and Vintage Jewelry
Or you found some nice vintage jewelry at a yard or garage sale or at the thrift shop. Whether you plan to keep the jewelry as a family heirloom or would like to resell it, a knowledge of vintage jewelry marks will help you to identify and date it properly. Purity marks for older silver pieces can differ from those commonly seen today. Patent numbers are especially helpful when dating older vintage jewelry, and will be covered in a separate article in this series. It includes silver marks from many countries and you can access it here: Silver Marks. As a general rule, signatures without a copyright symbol indicate the piece was manufactured prior to
Vintage jewelry is jewelry that is at least 30 years old, while antique jewelry must be older than a century. This means that there are many different types of vintage and antique jewelry based on fashion trends, manufacturing styles, popular materials, and jewelry stamps. One of the most telling ways to identify your jewelry is by its style, which can correspond to a specific time period or area. This cute little snake ring has a pair of ruby eyes and a diamond head. This beautiful filigree bow piece embodies the Edwardian aesthetic.