Ok, so I am running through another bag of cents and I come across this coin. At first glance, it looked like just another damaged zinc cent, but when I threw it in the reject pile, it made a funny noise much like that of a canadian cent.


After examining it for a while, I discovered that it was also significantly larger in diameter than a normal
Lincoln Cent. So much so, that a normal cent fits completely inside this coins rims (see pics). My (non digital) caliper puts this coin's diameter at 19.5 mm, whereas a normal cent should always be 19 mm, as constrained by the size of the collar. In addition this coin doesn't appear to be struck out of collar or anything either.
This picture shows a normal 2010 cent sitting on top of the 1995-D. Hopefully, you can see the larger rims of the 1995 sticking out all the way around.

How could this happen? The rim's all appear normal and there doesn't seem to be any real damage to the coin at all other than its apparent lack of copper plating. I have weighed it on a good balance and it comes in at a normal 2.49 grams. Is it possible that this coin was heated just enough to make it expand as it does kind of have the appearance of being burned. Its the sound that really gets me. It sounds completely different than a normal zinc cent when dropped

.
Shot's of the rims and edge of the coin.


Close up of the obverse surfaces.

Hopefully, I have provided decent enough shots for you to make an opinion. I'm sure its nothing special, but it never hurts to ask

Thanks in advance!
Chugly