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Rainbow Toned Cents

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ikandiggit's Avatar
Canada
1166 Posts
 Posted 04/23/2011  12:29 am Show Profile   Bookmark this topic Add ikandiggit to your friends list Get a Link to this Message Number of Subscribers
I picked these out of a hoard of cents. There were about 8-10 that had this rainbow toning. My assessment of them is there were affected by enviromental conditions in the location they were stored.

The pics haven't been enhanced at all other that adjusting for brightness and contrast. In hand the colors are just as vibrant:

Rainbow-Toned-Cents
Rainbow-Toned-Cents

Rainbow-Toned-Cents
Rainbow-Toned-Cents

Rainbow-Toned-Cents
Rainbow-Toned-Cents
Edited by ikandiggit
04/23/2011 2:42 pm
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uncle al's Avatar
Canada
311 Posts
 Posted 04/23/2011  01:16 am  Show Profile   Bookmark this reply Add uncle al to your friends list Get a Link to this Reply
Could it be that the owner of the hoard was a metal detectorist? I know some of the coins that I have come across detecting have had changes caused by minerals in the ground. Sure are pretty, still nice coins.
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Chump_Change's Avatar
United States
618 Posts
 Posted 04/23/2011  01:50 am  Show Profile   Bookmark this reply Add Chump_Change to your friends list Get a Link to this Reply
Those are Awesome. Bravo find.
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SHAFTA9a's Avatar
Canada
10743 Posts
 Posted 04/23/2011  06:44 am  Show Profile   Bookmark this reply Add SHAFTA9a to your friends list Get a Link to this Reply
Those are nice..

I've never seen toning like that on early Canadian coins before, I've got 20 or so rolls of Geo.V1, yet haven't got one like those.
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ikandiggit's Avatar
Canada
1166 Posts
 Posted 04/23/2011  07:53 am  Show Profile   Bookmark this reply Add ikandiggit to your friends list Get a Link to this Reply

Quote:
Could it be that the owner of the hoard was a metal detectorist?


I know what you mean. I metal detect and have several nickels, dimes, and quarters with heavy toning.

These cents are different. They sat in a garage, uncovered, for probably 20 years and were on the top layer of a pail of cents.
Edited by ikandiggit
04/23/2011 07:54 am
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cownick's Avatar
Canada
677 Posts
 Posted 04/23/2011  08:37 am  Show Profile   Bookmark this reply Add cownick to your friends list Get a Link to this Reply

Very nice. I also have toned coins from a basement of 40 years. Some of them are purple and blue toning while others are green and brown.
The frosting is still there. It's nice when there is no corrosion.
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uncle al's Avatar
Canada
311 Posts
 Posted 04/23/2011  2:44 pm  Show Profile   Bookmark this reply Add uncle al to your friends list Get a Link to this Reply
These tones sure are a great puzzle. If they sat in a garage for some time, could an auto have been running in the garage when warming up from day to day and the high carbon monoxide have had something to do with it? Is there a chemist around?
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ikandiggit's Avatar
Canada
1166 Posts
 Posted 04/23/2011  2:56 pm  Show Profile   Bookmark this reply Add ikandiggit to your friends list Get a Link to this Reply

Quote:
Is there a chemist around?


BadThad would know.
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BadThad's Avatar
United States
19972 Posts
 Posted 04/23/2011  4:02 pm  Show Profile   Bookmark this reply Add BadThad to your friends list Get a Link to this Reply
If the other coins they were stored with are normal, these were probably unintentionally cleaned or exposed to something before storage. My initial gut reaction is they were all cleaned (unintentionally) and developed the odd toning. This is usually what happens over time as the coins attempt to take on a new patina after cleaning.

....still nice finds. I like the woodgrain on the first obverse!
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ikandiggit's Avatar
Canada
1166 Posts
 Posted 04/23/2011  4:14 pm  Show Profile   Bookmark this reply Add ikandiggit to your friends list Get a Link to this Reply
Thank you, BadThad!

That is a definite possibility. The original owner of the coins was a hoarder who collected bulk lots of leftovers. That was why there weren't any key dates but there were varieties and some oddities that he overlooked. He was more interested in quantity than quality so some of the coins may have come from collections that had been cleaned and then disposed of.

Regardless of the cleaning, the patina on these particular coins make them some of my favorites in my collection.
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uncle al's Avatar
Canada
311 Posts
 Posted 04/23/2011  7:42 pm  Show Profile   Bookmark this reply Add uncle al to your friends list Get a Link to this Reply
Thanks BadThad and ikandiggit, some good ideas. One can think of all sorts of good ideas, but only the coins know for sure.
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ikandiggit's Avatar
Canada
1166 Posts
 Posted 04/23/2011  7:51 pm  Show Profile   Bookmark this reply Add ikandiggit to your friends list Get a Link to this Reply
That's right, uncle al, it's mysterious little gems like these that keep the hobby interesting and thought provoking.
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commoncents13's Avatar
Canada
248 Posts
 Posted 04/24/2011  03:50 am  Show Profile   Bookmark this reply Add commoncents13 to your friends list Get a Link to this Reply
-Ikandiggit- It might not the nicest thought but!

Quote:
These cents are different. They sat in a garage, uncovered, for probably 20 years and were on the top layer of a pail of cents.

That being said maybe ether a mouse or cat that urinated on them in the bucket that would bedazzle there colour!
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ikandiggit's Avatar
Canada
1166 Posts
 Posted 04/24/2011  09:24 am  Show Profile   Bookmark this reply Add ikandiggit to your friends list Get a Link to this Reply

Quote:
...or cat that urinated on them in the bucket that would bedazzle there colour!


No, it couldn't be.....he said he didnt.

Rainbow-Toned-Cents
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Ugly's Avatar
Canada
1733 Posts
 Posted 04/24/2011  09:38 am  Show Profile   Bookmark this reply Add Ugly to your friends list Get a Link to this Reply
LOL!

In a shop you have a choice of corrosive gasses from exhaust and fumes from various finishing products. Some are known for causing rainbow toning.

Doesn't matter, these are pretty fine to look at and have a story to them... the very best kind of kind of coin.

Thanks for sharing.
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cownick's Avatar
Canada
677 Posts
 Posted 04/24/2011  10:44 am  Show Profile   Bookmark this reply Add cownick to your friends list Get a Link to this Reply

In the house wood,(being a sawmill guy) contains acid. Maybe in the right conditions heat, cold, light,oxidization and acid gasses cause a rapid reaction with the copper and silver. Just my thoughts.

The next question is why only a few coins in the roll and not all of them?
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