Found this coin today. It comes up at +2 to +4 air testing on my mxt. It is very thin and it looks like it has the letters III on the back. I have googled it and got no where. Thank you.
You are right it is a 3 cent nickel. I really wish I could see a date on it. This is a first for me especially since it came up in the +4 vdi range. Thank you