1991D Nickel ???

[Shleppodella1]

I found this today in my change andhavenever seen anythinglikeor close to it. I have absolutely no idea what's going on here other than the finned rim. Is this annealing error or did it happen in the wash process? I've also noticed since getting into numismatics 5 years ago I thought, as most greenies do that errors would BE EASY to find boy was I wrong it's not as easy as one thinks!

ALSO I JUST WANTED TO "THANK" ALL OF YOU WHO PUT UP WITH ME AND HELP ME!!! U ROCK & WE NEED MORE PEOPLE IN THE WORLD & NUMISMATICS LIKE U.

[MintErrors]

In my opinion, it's heavily pitted. There is a lot of design elements missing in unusual places. This may have been in the ground, which will eat at the coin. Then it may have been soaked in Acetone to get rid of the grime.

The other scenario is, it was a victim of some sort acidic bath. This kind of leaves some design elements missing. It also destroys the rim as the mixture flows over the side. It can leave crevices or ravine like lower areas on the coin, where the mixture flows off the coin.

It eats at the Patina of the coin. It eats at the devices/design elements, the rim and disturbs the flat field of the coin.

You can try an experiment, if you choose to do so. Find a banged up worthless coin. Put that coin in something that is plastic and disposable. Cover the coin generously with catchup, and place it out of the way. Leave it there for a few days (2 - 3) or more and then take it out, wash it in cold water and see the effects. If you use a zinc cent, it may have more catastrophic results than a copper cent. But in the end, it should look close to the same thing.