This thing has a huge green corrosion spot on the obverse. How did it straight grade, let alone a ms64 bn? https://coins.ha.com/itm/large-cent...72-181076.s?ic4=GalleryView-Thumbnail-071515#
In the eyes of the TPGs a coin having verdigris on it is not and never has been a reason for not grading a coin. I couldn't even begin to guess the number of coins with verdigris on them that have been slabbed and graded ! And when it comes to large cents I'd go so far as to say that you can find as many, and maybe even more, coins that have pitting and or signs of corrosion on them than those that don't. In other words, what you'e asking about is nothing unusual, to the contrary it is the norm.
Or at least not on it to that extent. I’ve seen plenty of copper coins where you take a picture and they look like two completely different coins between the photo issues and what you see in hand
