How do you remove ugly toning?

Yes, it's possible. I phrase the answer that way because several factors are involved. It's the process called "dipping," almost always involving a solution of Thiourea.

The amount of toning is relevant; once it reaches a certain level of development, the dip time required to remove it will leave the surfaces of the coin visibly altered. Under no circumstances can you ever dip any coin into this stuff for more than a few seconds, during its' entire lifetime, before sufficient metal is removed from the surface to forever dull the luster.

So, you're first faced with the question: has this coin been dipped before? I am being deliberately vague about the topic; it's a practice I cannot endorse, and I do not want anyone attempting it on my recommendation.

It's for this reason I stray away from deep color tones, ie: blues greens and purple/red. To me these are the worst to ones because it shows toning in a later stage that now may be attractive, but can easily become unattractive over time. It's tonings that are very light and even that I like, ie: thin yellow, light pink, light gold.

To me however, when given the choice. No toning > toning.

A one Mississippi dip might do the trick. But heed the above advice.

theres plenty of articles and pictures that show you what really happens. no reason to waste your coins in the learning process.

Acetone should work in removing artificial toning. E-Zest is a commonly used silver dip. Some consider dipping a coin doctoring, even if there are no indicative signs of cleaning. It's a controversial issue, since many collectors and dealers "say no to dipping", yet many dealers and collectors dip coins. A dip in acetone won't harm the coin and isn't really considered dipping a coin.




No reason to stay away from those colors as long as they are stored properly. A non-humid and safe environment or an Intercept Shield box will stop additional toning from occurring.

I agree but toned coins, in slabs or not, will not tone if stored in, for example an Intercept Shield box which is only $20 or so.




Definitely. Collect what you like.

NO, just spend them. That is basically what I do. I've attempted to remove toning from coins for many years with all sorts of results. Some good, some bad. It's reall the type of toning, tarnishing, corroding, staining that you need to know.
For example I've got an Indian Head Nickel that was almost completely black. For almost a year now I've experimented with Acetone, Laquer Thinners, Mineral spirits, Vinegar, Lemon Juice, Tomato Juice and almost any thing imaginable and yet that dark discoloration remains. On other types of coins such as toned, very recent cents, after such attempts I simply put them back into circulation.
I presently have a pile of such coins on a kitchen window sill allowing them to sort of rediscolor making them almost look normal. Takes a long time but usually works.