Hey there, found this coin a few weeks ago, cant really find anything about it, other than maybe it was struck on a cent planchet. It is the same size as a normal nickel and feels like it weights a little more or less. Heres a few pictures, if theres anything you could tell me it'd be appriciated.
You should weigh the coin. Nickels weigh 5 grams; cents from that time period weigh 3.1. At a glance, it does not appear to be struck on a cent planchet; it's more likely plated.
Could be dug. The ground does all kinds of goofy things to coins. Or chemically altered some other way. Nothing special though, probably.