Is Greased Or Dirty Dies Like This

My opinion is that the coin was in some kind of fire, and then was put back into circulation and just has shined up high spots...

MM

Roy - I tend to agree that the coin looks like it was "burned". The grain on the surface coupled with the dark spots and the lumps - all look like typical fire damage. When a coin goes through a fire it can bubble up like you see here - especially a coin that is composed of layers of metal. The layers delaminate and gasses build up along the seam causing the bubble. It also appears as if someone then pounded the coin or squeezed it in a vice to flatten it enough to get it to pass. Over the years I have received several coins that look alot like this one that were called counterfeit by people trying to sell them. I suppose other causes could produce a similar effect - but I would start there and examine the coin with a binocular microscope to see if there are additional clues - especially in the area where there appears to be mechanical damage.

It looks like it was hit with something. It's post mint damage....

I think a little basic chemistry is required here. The coin is composed of a layer of copper between two layers of copper-nickel alloy. There is no steel in it. Copper melts at a lower temperature than the alloy with nickel. Copper melts at 1083 degrees C. But nickel melts about 400 degrees higher. A wood fire fueled with oak (one of the hotter burning woods) can reach a temperature of about 900 to 1200 degrees C in close proximity to the combustion point. Therefore it is a simple fact that the copper center would melt before the surface would. It is also a fact that a wood fueled fire would not be hot enough to melt the copper-nickel surface layers. The expansion of the core changing to a liquid and evolution of any gasses trapped in the metal would cause a bubble to appear on the surface of the coin. At higher temperatures the Copper-nickel would approach a plastic state making it deform rather easily. When the coin cooled it would have been too distorted to pass. But of someone used a hammer to pound it out they would leave irregular surface marks just like I believe I observe here. I no longer have a woodstove or I would test my theory.

I got the coin out of Regions Bank shotgun raped roll and their ones that look they took a grinder to them.I have 2 more unopen rolls!
Theirs only 2 or 3 coins that look nice the rest have the lava flow error, die crack,without the exta metal just the shape that look like an lizard on the left side of monticello.I didnt take a torch to the coins ,why would I what to do that