I actually found this in a Coinstar with a few other coins today. It looks like a copper planchet with a reeded edge and is the same exact diameter as a quarter. The reeding doesn't go all the way across the edge though. The obverse and reverse are completely smooth with no residual details. I've never seen anything exactly like it, so it is possible that it's not even a planchet. Any ideas?
Maybe a quarter that has had the obv/rev ground off. So you are just left with a copper core. (And reeded edge.) Line it up with another quarter. If it is the same size it used to be a quarter before someone damaged it. Prob should weigh 5 grams or so?
I think you're right that it's possible that this had mechanical grinding done to it. The obverse and reverse are completely smooth, so it's unlikely just to be heavily worn. It is the same size as a quarter and weighs 6 grams. So I'm thinking probably foreign since it's a bit too heavy to be a ground down quarter.
Well the layers are not very thick or heavy, if it's not the same size as a quarter then yes foreign. But if it's the same size as a Q it probably is as the US makes their coins different sizes from foreign (99.9% of the time.)
I think its just a copper slug. Still has the cut and shear edge where it was punched out of a sheet of copper. "Reeding" is on the cut side and most likely caused by worn hole die of punching machine whose purpose is to made a hole not a blank or any type of planchet.
