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 Replies: 13 / Views: 1,306 |
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Valued Member
United States
189 Posts |
Can someone please tell me what causes a coin to be shiny and clean on one side and richly toned on the other? Such as Morgan dollars. It is common to see coins with either side toned or cleaned so I wonder how albums can account for this. Thanks |
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Bedrock of the Community
United States
14454 Posts |
the one side may be against something hindering the toning while the other side was in the elements unprotected
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Valued Member
United States
193 Posts |
I have a P-D-S set of Morgan's (that were)in a dark blue velvet type box, they are setting in a plastic tray that is coated in a dark blue velvetine type of thing. (you know, the Cheap, Fancy look) these were put out by "Coin Vault" type folks. these were in a very dirty. smokers house for over 15 years. When I popped them out (the box was disgusting) the reverses had very cool toning Blue, red, yellow. The Obverses were plain XF-Polished (Coin Huckster mass Marketing grading term  ) It also was a common practice in the past to place coins (Such as Morgen's) in a wood coin cabinet. These were lined with cloth such as velvet. Coin resting on cloth + humidity + time = toning Edited by 7070
10/05/2007 7:46 pm
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Valued Member
 United States
189 Posts |
7070
Thanks for clearing that up.
I like the example of the coin cabinet.
Makes sence
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Bedrock of the Community
United States
19935 Posts |
That's cool 7070!
Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Pillar of the Community
United States
1952 Posts |
coins will also tone on one side if they are in a roll. the end coins will tone on the outside of the coin and not on the inside
Gary
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Valued Member
United States
363 Posts |
This Mexican 1947 5 peso coin was sitting out on a table for a few weeks. The obverse was face down, reverse exposed to open air. This is the result. I was surprised at how quickly the toning occurred. The reverse previously looked as clean as the obverse. Image:  Mex1947ob.jpg97.18 KB Image: Mex1947rev.jpg98.03 KB Meant to add that I was inspired to do this because of an experiment Super Dave did a few months ago by leaving a coin out on the table. But, if you see this post Super Dave, didn't you get the opposite result, side contacting table toning wildly? Edited by adobero1
10/06/2007 12:31 pm
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Pillar of the Community
United States
1952 Posts |
wow ad your coin got butt ugly on your table. could be the cleaner you use on the table
Gary
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Bedrock of the Community
United States
62064 Posts |
Which side was facing up and what side was touching the table?
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Valued Member
United States
363 Posts |
Couldn't be that, Gary. I'm a single guy...I never clean my table.  No, the open air toned the coin, obverse was down, reverse up. But, as I said, I think in Super Dave's experiment, he had the opposite result, but he'll have to confirm that. |
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Pillar of the Community
United States
1952 Posts |
i get the single guy thing lol I was single about 40 years ago but Mom cleaned the table then. at least your honest lol
Gary
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Pillar of the Community
Canada
1267 Posts |
Can someone please tell me what causes a coin to be shiny and clean on one side and richly toned on the other? Such as Morgan dollars......... The majority of Morgan dollars toned while still in the original mint bags after sitting around for about 60 years, and was caused by the sulphur content of the bags interacting with the silver. Only the coins actually in contact with the bag toned, mainly on the side of the coin pressed up against the canvas. Bag toned Morgans with color on both sides were those sitting in the corners or seams of the canvas bag, and thus had both sides in contact and are fairly rare. Here's a neat example, you can actually see the weave of the mint bag in the toning (we call this textile toned). The reverse of this coin is untoned.  Image: 1882-S.jpg27.42 KB Edited by hadleydog
10/21/2007 1:24 pm
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Bedrock of the Community
United States
20753 Posts |
Occationally I purchase cleaned coins due to the low prices. I then take them and put them on the inside of a kitchen window sill on raw wood. Eventually the coin starts to take on either toning or just darkening that makes the cleaning almost vanish as being apparent. Mostly it depends on the time of year since if the windows are open, most fumes from cooking are lost to the outside. The main thing is I have to turn the coins or they will look like cleaned on one side and normal on the other. If most coins are exposed to certain substances and not disturbed, one side will be effected more than the other.
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Valued Member
United States
189 Posts |
Hellooooo, just carl,
That an interesting idea,how long do you let a coin sit
to see results?
Thanks
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Replies: 13 / Views: 1,306 |
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Posted 10/05/2007 7:42 pm
Mex1947ob.jpg
Mex1947rev.jpg
