None that I have ever run across, at least none that explain it the way I explain it. I think I've probably written more about it on this forum...
Oh there's definitely science involved in the hobby, and some folks even want to argue with that. But there is a great deal of opinion as well....
Interesting lathe marks on the '64 IHC Charmy. Not something you see every day !
You partially have the right reason, but you are thinking about it incorrectly. This is what the surface of a coin with luster looks like -...
Well that's "supposed" to be how it is, but when dealing with the TPGs the reality is, it isn't that way at all. In recent years there have been...
Yes, existing toning does slow down future/additional toning, but it does not stop it. On that we agree. But toning, other than the typical gun...
From a historical perspective there are no price changes in the coin market due to the time of year. For the most part price changes are...
You can start here for ideas - http://www.stonybrook.edu/vescalab/research/research7.html
If you think that it is beneficial to treat (clean) coins to prevent further damage from environmental contamination, then how could you not also...
Ruben there are a great many possibilities. It could be something as simple as the coins being left in a jeans pocket and run through the washing...
Well, I dunno. Every coin I've ever seen it used on, I can see it. It leaves a semi-glossy appearance on the coin, almost like a very light...
Because the acid in it is reacting with the copper. When PVC residue is first deposited on a coin it is a clear, oily like substance. But in time...
And that is what I was talking about as not being water soluble - the film it leaves behind on the coin.
One thing I might add Tom, there are those who consider dipping to be nothing than an acceptable form of cleaning, myself included. That said,...
Green on copper can still just be PVC residue Thad, that's about the only exception I know of. And if you just leave verdigris alone, eventually...
It may be verdigris on all of them, but in any case I would say the one on the left is the worst. But all 3 coins are definitely damaged, and...
OK, but you need to realize they are trying to give you the best advice they can. As for your question, I don't know, I think it's kind of iffy...
As you say, Thad can confirm or deny, but I don't think distilled water is going to rinse it off because I don't think it's water soluble.
Only because it is Thad, only because it is ;)
All I can do is tell you what the dictionaries say Sam. That definition is verbatim from a dictionary. If you don't want to agree with the...
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