Bowers on coin toning

cplradar · Oct 6, 2021

http://news.coinupdate.com/bowers-on-collecting-conservation-toning-and-more-2/

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cplradar · Oct 7, 2021

This is not to be confused with concentric toning gained by having a dollar stored for many years in a cardboard holder, such as a Raymond “National” album, that becomes colorfully toned.

I have said versions of this in print several times, and no one has ever challenged the comment. “Better coins through chemistry” is a given. A dealer no longer living told me he made a fortune in the late 20th century by buying AU silver coins, dipping them to be brilliant, and then carefully toning them in colorful hues, after which they were certified without question.

A particularly bad example of an artificially toned 1991 American Silver Eagle. As you can see, the result is not always desirable.

Also, what is artificial? I also mentioned that I put a bright freshly-minted medal on an oak surface, and in a short time it gained gorgeous electric blue toning. This was unintentional, as I had left it in the drawer of a new table I had recently purchased. Is this natural toning or artificial toning?
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Bowers on coin toning

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