I was detecting along a undercut bank along the coastline in Ct when I had a 18-20 on my Nox a nice solid repeating tone so I dug down a couple inches in the sand when out popped what appears to be a hammered copper coin!!! Well so far the only info I’ve found on this is a picture of a similar looking 1600’s copper which I’ve provided I’ve Meade some killer finds with my equinox 800 do you need a field tester? Lol!!