I believe @TheFinn is correct about the manganese. There were many articles in the coin publications leading up to the release of the Sacajawea...
I don't think novelty plated coins are covered under the statute Robert mentions. I believe the section about altering the value involves changing...
It could be a cent. Whatever it is, it did not leave the mint like that. It looks like it lost a battle with numerous tires and a road or parking lot
What are you trying to show? The obverse has a black spot on the rim under the bust that looks like damage (environmental??). The magnified...
You could always trade it to your friend for the 1964-D cent you claim was over struck on a Canadian cent that you said he took in a previous post...
What a terrible person, he cheated you out of $0.01. However, if you still still believe you hit the lottery and all of the advise here was...
I also believe it's fake. The details are too weak, the surface is grainy, and the bumps on the surface point to it possibly being cast
Save yourself $50+. Google a pic of a 1943 steel cent and compare the 3 to the one one your coin. It will be obvious that yours is fake.
Definitely altered. The 3 is wrong. Probably was a 1948
The S has nothing to do with it. MMs were punched into the die by hand and the location will vary.
Or snorting something ;)
Better living through chemistry. Copper is a very reactive metal and loves elements like oxygen and sulfur (and other things) which tend to...
This sounds like a great research project (unfortunately, I have a number of "great" research projects sitting in my queue, some of which may be...
1971 was the first year I was old enough to understand and be interested in baseball. Growing up near Pittsburgh, I remember running home from...
It looks like a regular Zinc Cent with environmental damage. @DKKamalani if you're absolutely certain your scale is accurate then the only real...
I think BHM may be the name of the private mint that issued the medal, but I was unable to find any old private companies with the initials BH
It's damaged from a coin rolling machine. You can see the circular line through the last few letters of LIBERTY as well. You're seeing metal...
The discoloration makes it look like weld splatter or some other high temp molten metal hit it. Sorry but It's not a die chip
You can easily see the that the 1929-S RPM has the outline of an "S". The mark on your coin is irregular. If you think about how a punch...
Like @desertgem and @physics-fan3.14 I searched the metallurgical and material science literature and found nothing that showed acetone reacted...
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