If it’s an upper situation “L” and also a lower case “c”, it’s for Louis C Marks who developed jewelry inside the 40s. SETA is a company that gives vogue jewelry. Their jewellery typically incorporates a CZ plating more than silver. CN means that the jewelry is made in China, https://slot-maxwin30739.idblogmaker.com/36003880/indicators-on-jp88-you-should-know