Edge looks completely normal or is it just environmental damage?I have seen similar examples like this but these tend to be tricky for me since I haven't found any.
Thats what I thoughtcan't get any of of easy ones they look like it but the final result is just damage or toning.
i think when edge is shiny and 1 side (sometimes too, but not often) are dark then real deal, from what i have seen offered, sintered planchets go from a rosy reddish hue to outright black, it is hard to tell unless you deal em all the time....
I've posted it before but here's the one example I found, found in 2019 in a BU box the only one like it out of the 2000 quarters in the box. the additional pictures show the luster that's still present a bit better than the first ones. Would need to see the edge on that Mount Rushmore. better pictures would be helpful also to really see the surfaces. If it's not "uncirculated" it's going to more likely to be environmental damage and the edge will be similar in appearance to the obverse and reverse. I mean, improper annealing is basically environmental damage, just done at the mint pre-strike. the edge is one way to tell, the reeding collar and ejection obliterates the annealing evidence one the edge. the other is the luster flow lines, on annealing errors, the strike luster is still there as the strike happened AFTER the annealing error to the planchet, uninterrupted and flowing freely through the discolorations of the planchet. if Environmental damage, the luster is impaired and muted, even nonexistent and "flat" by what caused the environmental damage because that happened AFTER the strike and has altered the "as struck surface". I'm far from an expert on it, just sharing what I've learned on it.
