I presume this was struck through grease until I looked at the edge and that hasn’t been sanded the ridges are below that copper band
I don't think the lettering would be that well defined if it had been struck through grease. I think it is more likely the coin was compressed somehow (mounted in something and smashed under high pressure- PMD, in other words). But wait for other opinions.
It is not a " copper band". What you are seeing is the copper base of the clad coin. Metal Composition: 91.67% Copper - 8.33% Nickel The reeding is formed from the third die. As stated above, mounted in something which has flattened the reeding, while the reverse was worked on, for whatever reason, to damage and flatten the eagle and branch. Post mint damage.
Just another altered/damaged Quarter. Not a mint error of any kind. Here this will help a bit. A website that explains clad coins https://www.usmint.gov/learn/kids/coins-life/coin-composition
The thing is is, my coin is a little bit wider than a normal quarter of the same year, and it weighs a little bit more. The third picture is my order on top of the other quarter and it’s wider in circumference
