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<p>[QUOTE="Coinchemistry 2012, post: 2130010, member: 28107"]There were toned coins in the GSA sales, but these were looked upon dis favorably and were not put (usually) in the uncirculated black GSAS holders. A few escaped. I can't say there necessarily were differences in the number of toners between the GSA and Battle Creek hoards. Out of 10,000 Battle Creek coins less than 1400 starred, and some of these were PL or semi PL and not toned. And the number of monsters is much, much less but there is no way to quantify those specifically.</p><p><br /></p><p>I know one of the Battle Creek bags was supposedly in a Chicago bank vault in the 1920s. I can't say much regarding moisture in those or provide any other insight. The only thing I can say about treasury vaults is that they stopped using coal heating and began using natural gas in 1901, and there were moisture problems prior to the beginning of the 20 th century during the period Morgans (when most of the dates that are most common with rainbow toning) were produced. All of this is per Roger Burdette (except the Battle Creek info).[/QUOTE]</p><p><br /></p>
[QUOTE="Coinchemistry 2012, post: 2130010, member: 28107"]There were toned coins in the GSA sales, but these were looked upon dis favorably and were not put (usually) in the uncirculated black GSAS holders. A few escaped. I can't say there necessarily were differences in the number of toners between the GSA and Battle Creek hoards. Out of 10,000 Battle Creek coins less than 1400 starred, and some of these were PL or semi PL and not toned. And the number of monsters is much, much less but there is no way to quantify those specifically. I know one of the Battle Creek bags was supposedly in a Chicago bank vault in the 1920s. I can't say much regarding moisture in those or provide any other insight. The only thing I can say about treasury vaults is that they stopped using coal heating and began using natural gas in 1901, and there were moisture problems prior to the beginning of the 20 th century during the period Morgans (when most of the dates that are most common with rainbow toning) were produced. All of this is per Roger Burdette (except the Battle Creek info).[/QUOTE]
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Beware of rainbow toning
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