Judging from the orange colour, it seems likely that the above coin may have been a ground find, or had otherwise picked up environment corrosion, which has been cleaned off with acid, or perhaps electrolysis.
The scratches may have been some attempt at mechanically cleaning the corrosion off before the acid was applied. Either way, I don't think it was a pristine coin beforehand.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis