Now this thing looks like it got caught up under a lawn mower but it thought those raised bumps on the reverse was odd since the lettering seems to be died ontop of them. What do you think?
Probably hits on the Obverse that has pushed the metal up on the reverse, kinda like shooting it with a BB gun. And if nothing else you have about 90 cents in silver from that coin.
I wonder if the coin might have lost a lot of weight due to corrosion, with the bumps emerging in spots that were somehow protected? Does it look thinner than a normal nickel?
Sorry Thomas.. not an error. I also metal detect and have dug up all sorts of strange looking coins but they are mostly Environmental Damage.