Removing Spots From Cn Coin

The answer likely is, forget about it. If they're dark spots, unless you harshly clean it, they're there forever. I have a few like that and I'm not too bothered by it. If they were Proofs, that would be different, depending on the overall eye appeal.

Could use a photo but remember that unless you know what those spots are, chances someone can tell you how to remove them is dim. You could be mentioning acid spots, dirt, milk, spit and on and on and on with all sorts of possibilities. My suggestion is to attempt Acetone dip and if that fails, forget about any further attempts.
Use the Search tab at the top for Acetone, cleaning coins, coin cleaning and similar variations of removing such spots.

I took your advice and left it alone, metalman. No pics unfortunately because of camera issues at the moment. Returning the coin as these spots really kill the eye appeal. The reverse is nice, but I want something that I really will like for a couple years to come at the minimum...the search continues!