Copper conservation help needed

Aside from being more wet, no visible changes after 24+ hours. Soaking will continue for another 5 days or so.

 

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It looks like some of the green stuff is gone. Maybe just the lighting.

I don't care for anything that involves touching the surfaces of the coin. No matter how soft a brush is, it can cause hairlines. It's going to move the dirt/junk across the coin. I believe that dirt is going to create hairlines.

Acetone is a great product but there is a down side. When it removes the junk from the coin, tiny hits and hairlines will show more. When you remove PVC, the surfaces under the PVC may not look any better. The color may not match the rest of the coin.

 

Good points. This coin is already multi colored and has problems. Ultimately, I just want to remove the harmful stuff and preserve the coin.

 

From your earlier photo, it looks like you're using a plastic tub.

At the risk of stating the obvious, switch to a glass or metal bowl when you move on to acetone, and be sure to cover it. Acetone evaporates rapidly.

 

That’s the plan, but thank you for pointing it out. I’ve taken the liberty of borrowing my wife’s cookware for the acetone.

 

I am sure she will love that idea.

 

Like I said, at the risk of stating the obvious . . . but I figure better to state it than not, just in case.

 

Well, that’s a way to describe her feelings... probably not the way she would.

 

So...ignorance is bliss...perhaps I can use artificial toning (or just some strategic gunk) to hide surface imperfections. Please don't get bent out of shape, I'm just playing Devil's Advocate...I understand what you are saying and agree. I have many coins I wish I had not touched!

If you have a small glass (shot glass, etc.) and a jar with a sealing lid, put the acetone in the shot glass, put the lid of the jar down on a counter, put the shot glass on the lid and screw the jar onto the lid so it is upside down...instant isolation chamber.

 

Watch out for those crafty chemistry guys

 

Says the...

 

" Put the lime in the coconut and call me in the morning..........."

 

This is brilliant!

 

Thank you.

 

Update: after over a week of soaking in distilled water, zero noticeable change. After rigging something together, thanks to @Kentucky ’s recommendation. Both containers were thoroughly rinsed with water and acetone prior to the acetone soak.

 

After a few hours, I was able to run away most of the tape with my finger. Yes, I know that you’re supposed to use something soft and just barely dab (I later wet qtips and rolled them lightly over both coins). But this coin isn’t ever going to be anything than a problem coin. At least it’s a coin that’s not going to deteriorate due to glue/tape on it. The pink areas are a bit more pink. Perhaps some day they’ll retone. I am concerned about the verdigris on the coin. I am hoping the acetone will be enough to remove it, as there isn’t much. No change at all to the cent. Not sure how to help that one, as I’m not really sure what caused the weird darkness (toning or film??). They’re both back in the acetone for an overnight soak.

 

looks much better without the tape residue. Verdicare will preserve the coin and remove verdigris if acetone doesn't.

 

It is my understanding that a coin that uses Verdi care will not straight grade. Not that my coin ever would, but is this true?

I only ask because I’m under the impression there are at least potentially other ways to remove verdigris, to include soaks in olive oil, that could still get a coin straight graded.

 

I think verdicare treated coin would be better able to straight grade than an olive oil soaked coin.