If it’s an higher case “L” in addition to a decrease situation “c”, it’s for Louis C Marks who designed jewellery within the 40s. SETA is a company that gives style jewellery. Their jewelry generally contains a CZ plating above silver. CN signifies that the jewellery is created in China, https://alexisqdpzl.blogdiloz.com/35802399/top-latest-five-jp88-urban-news