TK316 is short for TUSK Chrome steel, which indicated that your jewellery will continue to be stainless and you will have no issues cleaning it. The indicating of “JP 88” will vary according to the jeweler, place of origin, and unique marking system employed. TK316 is short for TUSK Stainless-steel, https://daltonzkwis.ampblogs.com/considerations-to-know-about-jp88-73602137