Sorry but it's just environmental damage. Copper is a reactive metal and there is a lot of stuff out there that will help with that reaction
It was pressed into another coin after it left the mint. Sorry but only worth face value. It shows up fine on my monitor. Those guys must be...
I think that frequent number of questions regarding the 69S DDO and the threads from recent newer members claiming to have "Unique errors" and...
It was sandwiched between 2 other objects (most likely coins) and squeezed in a vice.
It looks like the copper plating was removed by grinding/polishing. It's post mint damage
Initially, this thread was a little confusing, but that appears to be cleared up. As others have said, the 1970-S CENTS have small and large...
Tough to tell from the pics. If its indented, then it's PMD from a hit. If it's raised then it could be a minor die chip.
No Reeding. It's more than likely just part of the environmental damage you see on the rest of the coin. Also a chance a vice or pliers left the...
Hard to tell. Acetone only works on organic materials, not toning/corrosion. The bottom coin looks corroded. Not sure about the top, but my...
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