I saw those pictures. I am not saying definitively either way. It's my experience that a lot of bad pictures from point and shoot cameras can really mess up the red/green balance. When you photograph old copper with the red turned down and the green turned up, you get photos like the sellers of coins that look like yours in hand. When I photograph old copper, with a DSLR on a copy stand and dedicated daylight bulbs I still have to post-process the photos and turn up the red and down the green to get a photo that approximates the coin in hand. And that's using a decent photo set up. It's just my experience. I would not be surprised to learn the coin was conserved between his photos and when you got it, and if that's the case it was a decent conservation that does not appear to have altered the patina/surfaces. But I would also not be surprised to learn that nothing was done to the coin. I will try to process the original sellers photos later tonight when I get home to show you what I mean.