With the full image of the coin I'm not so sure, but it almost looks like a problem with the coin capsule reflecting on the mirrored field. Do you feel any kind of imperfection on the surface of the lens like a possible crack in the plastic?

ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!!
