Ammoman Bronze Member Oct 12, 2015 2,204 5,316 NC 🏆 Honorable Mentions: 1 Detector(s) used XP Deus, Nokta Impact, Tesoro Compadre.. Primary Interest: All Treasure Hunting Sep 24, 2021 #1 Found today. What?s with the letters on the back and the design? It says HISKOK on the back. All I can find is a family name and it being open on one end. Did it have a function?