nickels

From the last couple of hunts with my new CTX 3030. I have not found any old, silver coins yet. Found the first nickel yesterday along with complimentary pull tabs.

I've been using an Anfibio Multi for about 2 months. I thought it just didn't like nickels, no problem with other coins. The problem lies in the numbers, I get the same 31 for nickels as I get for square pull tabs. Has anyone found a work around for this? I haven't been able to find a work...