Sorry Ron_CA, I saw the light color and what Ithought were red spots and assumed it was cleaned. I wasn't thinking about the flash or lighting.
Regarding Acetone, I have been using it on copper coins for many years and I, personally, haven't seen any negative effects from it but, after doing some research on this forum, I can see it is controversial for copper. Sorry about that. I think the difference is I never submerge or let it soak on the coin. I just pat the coin or place it between two cotton balls soaked in it and then immediately let it air dry. Maybe that makes a difference.