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Replies: 35 / Views: 4,947 |
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Valued Member
Canada
387 Posts |
Re: one sided v/s two sided toning
Although I see the principle behind the notion that natural toning mostly happens on one side does it not depend on the exposure?
I know of a few people who showcase their sterling silver coins, bars, medallions, medals etc. on one of those small coin display holders. Not even a capsule is used. I have seen enough displayed like that to make me think how it could be zero probability to have toning on two faces.
On the flip side someone bent on artificial toning can very easily create any pattern one side/two side/partial etc they wish by selective precoating the surface prior to accelerated exposure to force toning.
IMHO one needs to carefully look at each situation on their own merits.
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Bedrock of the Community
Australia
21788 Posts |
Two obvious ways that a coin can acquire differential toning, side vs. side: It can be left in a drawer for a number of years. The resins in the wood can affect the side in contact with the wood. I think that is the case here. Could also explain the friction / wear pattern. A coin can be the end piece in a roll, where only one side has been exposed.
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Pillar of the Community
Canada
3234 Posts |
There are a lot of variables out there....... MY 11 set has equal natural toning on both sides and that's after sitting most of it's life in the OE case with one side up....but my 5 cent piece of that set has a little less toning on the OBV.  
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Valued Member
Canada
148 Posts |
 Devlec beautiful 34 half. One thing that has me  is that some of the monster toners in Canadian coins that I have seen is the cased early seventies silver dollars yet are only .500 silver content, I would have thought the higher silver content would tone more as it is more reactive. Anybody know why?
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Moderator
 Canada
10460 Posts |
It is the higher copper content of those .500 cased dollars, that create some of the awesome colours in those early 1970s cased dollars. Also, 1971-1973 were not in any kind of capsule, so environmental conditions and the cases themselves all factor in.
"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
Edited by SPP-Ottawa 09/17/2013 8:21 pm
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Pillar of the Community
Canada
3234 Posts |
Thanks priorpence...sometimes we get lucky ..and then sometimes we have good people guiding us. Way back then, I had good guidance.
Always listen closely to SPP.
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Pillar of the Community
Canada
632 Posts |
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Pillar of the Community
Canada
1354 Posts |
t_y
Your guys banter is always funny...I could imagine what it would be like after a few beers.
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Moderator
 Canada
10460 Posts |
t_y is not a geologist... after a few beers, he is snoring...
"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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Valued Member
Canada
129 Posts |
I find that most proof like coins tend to tone evenly on both sides I guess that would be that the holder or container is open on both sides compared to specimen or proof coins where one side is exposed and the other covered where no air or light gets at it. my thoughts
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Valued Member
Canada
250 Posts |
Thanks everyone, for all the info on toning. Much appreciated! 
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Pillar of the Community
Canada
1700 Posts |
I think that these types of rainbow toning are from enviornments where many kinds artificial elements are present.
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Pillar of the Community
 Canada
2427 Posts |
Can third party graders determine whether or not a coin is naturally toned versus artificially toned?
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Pillar of the Community
United States
1511 Posts |
Quote: Can third party graders determine whether or not a coin is naturally toned versus artificially toned? It's more if they deem it as market acceptable. They have a pretty good eye for toning but I'm sure they've slabbed some coins that were AT as well as others being denied that are NT'ed. Toning is a extremely complex topic, one cannot learn to tell the difference between natural and artificial toning in an instant, it's something that only time and experience looking at hundreds of toned coins can do, and even then there's ones that will slip through. I'd say the TPG'ers are pretty good about knowing the difference but do get fooled on occasion. I don't really feel like getting in a huge debate, as many people have different views on this topic... And it's late. But most toning, wether in a album/roll for 40 years or put in an envelope on a window sill natural.. Maybe done on purpose to basically ensure/speed the process with the later but still natural. Every metal tones, that's why people have silver/brass polish.. The know there silverware, jewelery, flatware, brass bowls etc are going to tone... Even if there stored in the safest way.. So why are people surprised and mad when there silver coins tone? Your really not expecting this? Lol I feel that dipping a coin is far more unnatural than toning on a coin. Obviously coins toned with chemicals and/or electricity I would consider unnatural, and don't condone in the least, but otherwise I'd expect my coins to eventually get some toning. At some point, maybe not in our lifetime, but eventually.. Silver coins, no matter how there stored, will tone.. Like it or not. And beautiful rainbow colors can be obtained just as naturally and in the same process that dark, Unappealing coins do. Those vibrant blues, purples and reds can come out on one coin in an album while the two next to it turn black, it has nothing to do "with a different environment or smoking". Can smoke tone a coin? I'm sure it can. But natural occurring elements in nature/the air can bring these colors out just as easily and for some reason can affect one coin while the one next to it stays white... Or turns dark.. There toned by natural elements in this world, how or when they come out is anybody's guess.
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Pillar of the Community
 Canada
2427 Posts |
Pretty much sums up what I was thinking.
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Replies: 35 / Views: 4,947 |
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