GLR is really a producer stamp and 10k signifies ten karat gold, and that is The most cost effective good gold alloy Employed in jewellery. If it’s an upper situation “L” and also a lower situation “c”, it’s for Louis C Marks who made jewellery in the 40s. TK316 https://emilianolykvf.bloggerchest.com/31984988/the-5-second-trick-for-jp88