Just wondering if this toning on this Great Smokey Moutains P Mint Quarter is natural or what is wrong with it.
If you place the coin on a hard surface while taking a photograph, you'll get better results. Keep your lens parallel with surface of the coin, too. ETA: Crop your photo, also.
It has either been exposed to a chemical, heat, or electricity. That toning is not natural, and is not attractive.