TK316 is brief for TUSK Stainless Steel, which indicated that the jewelry will remain stainless and you should have no difficulties cleaning it. The that means of “JP 88” may vary depending on the jeweler, region of origin, and particular marking process utilised. Should the mystery of “JP 88” persists, https://augustlctkb.amoblog.com/top-jp88-secrets-58724798