Acetone Questions.

i thought acetone turned copper black? am i wrong on that?

 

Log in or Sign up to hide this ad.

Yes! Some say it takes on a pink cast, but never heard black.

 

I think it's very telling how the "experts" disagree. Just goes to show you opinions are simply that...opinions. The facts often vary. 24,000 posts or 24, "facts" often are born of opinions rather than actual facts. (an important disclaimer that should be included in many posts).

 

That,s it "Opinions" I guess this could be considered a hands on
Project

 

So if someone does conserve it with accitone and if they are a honest dealer, do they say the coin has been cleaned, say conserved, or say nothing.

 

At least 99% of the time they will say nothing because they will know nothing. Even GDJMSP admits that, although he probably would think it would be noticeable more than 1% of the time.

 

If they're honest, they'll admit they've all be cleaned at some point. Scuse me...conserved.

 

If they were the one doing it, how would they know nothing

 

Here is GDJMSP's answer from post #2. Now do you really think that PCGS and NGC would grade them if they could tell something had been done? Really?

 

There will be some results of testing, but not much. That would be too large of an undertaking. The material presented is based upon my experience, reading and science. The book is primarily about copper coin verdigris and verdigris conservation with some discussion of general conservation because there is overlap.

 

You know what they say about opinions.

My comments are based on science and experience. Regardless of your experience, you cannot trump the science. If somebody ruined their coin using acetone, it was because they improperly conserved the coin, the coin had pre-existing problems, or their acetone was of poor grade or contaminated.

 

So then, will my fingernail polish remover do the trick?

 

NO! Not pure acetone.

 

NEVER use fingernail polish! It contains added ingredients like ethyl acetate and perfumes.

 

So what do they do to a coin

 

Cool Thad. I'm always up for material that is based on science and experience. Good combination. I look forward to picking it up when it comes out. I do wish someone would do one on actual tests, photographs, and the like on different metals with different chemicals. There is so much disinformation regarding "conservation", it would benefit many folks if there were such a thing. Metal is essentially a chemical. There has to be a better way to "conserve" them via some other chemical component.

I was read David Bower's book on grading by photographs (excellent book). He acknowledges the "code of silence" associated with conservation, but didn't expand on it much. I have to say I certainly don't understand what the big information blockade is all about. Is the "conservation" business that cut throat that a "code of silence" needs to be formed? Is it a closed market or what? Strange aspect of coin collecting IMHO. Maybe your book will enlighten me a bit on some of it.

 

Not too much happened to the "guinea pig" cent that I had dipped in polish remover. I only left it in for a couple minutes. It does smell nice, though.

 

LOL!

I ran down to the hardware store this weekend and bought some acetone. It is still sitting in the bag in the corner. I'm afraid!

I'm going to find some road kill and take before and after pics and see what I get.