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 Replies: 16 / Views: 2,847 |
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Valued Member
United States
160 Posts |
I recently purchased some coins that had some attractive toning and I don't want to see them change or start darkening. Will a 2x2 preserve them or should I buy some slabs that are more "airtight"?
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Pillar of the Community
United States
4901 Posts |
Anything that is put between the environment and the coin will impede toning..a flip, 2x2, slab etc. That said obviously some are more protective than other but none of them are airtight. Coins can tone even in slabs but at a MUCH less of a rate and this would be the best way to protect them. I should add that I have had ASE's sit in flips for many years and not have a hint of toning...I have has ASE's sit unprotected on a shelf and the bottom show zero toning while the top was overwhelmed. Hmmmmmm..I wonder if those vacuum food storage bags have PVC in them?  |
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Pillar of the Community
United States
4212 Posts |
I'm trying my darnest to keep my avatar (Bahama 20c) from turning any more. It's all NT, and would hate to see it get any more so.
Edited by fioti
11/20/2012 10:57 am
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Moderator
 United States
188213 Posts |
Somewhat stolen from BadThad... Place coin in Air-tite, Air-tite in 2x2, 2x2 in archival page, page in binder, binder in Ziploc type bag with desiccant and cleaned sacrificial copper coin. He would say that the more layers, the better.  |
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Pillar of the Community
United States
4901 Posts |
Duh...forgot about Air-tite's...they do work pretty well
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Pillar of the Community
United States
4212 Posts |
jbuck, If I had to steal knowledge from anyone concerning conservation, Thad's the guy.
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Pillar of the Community
United States
538 Posts |
Foxwoods, I don't think vaccum bags for food contain PVC because that's not food safe. I believe they use PP.
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Pillar of the Community
United States
4901 Posts |
Quote:
I believe they use PP. Dude...I will suppress my response that initially came to mind... ....and the one after that  |
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Pillar of the Community
United States
1721 Posts |
Foxwoods Man, I must be slow today. I didn't catch the PP until you mentioned it. But it's still better than poo poo.
No suppression here.
On a serious note, you can take a 2x2 and tape all the edges closed. That should make a nice seal as long as the plastic windows integrity doesn't get broken.
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Moderator
United States
188213 Posts |
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jbuck, If I had to steal knowledge from anyone concerning conservation, Thad's the guy. I agree. |
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Pillar of the Community
United States
613 Posts |
The "sacrificial copper" absorbs all atmospheric garbage that'd tone the other coin?
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Valued Member
United States
359 Posts |
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The "sacrificial copper" absorbs all atmospheric garbage that'd tone the other coin? That is correct. I have inquired about the same process and use these too in my storage process. |
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Pillar of the Community
United States
655 Posts |
Great topic ndwlegal. I also recently acquired a couple of coins, NGC slabbed wheaties, that have nice toning that I would like to see remain as is. I'd like to know if they are sufficiently protected in the sealed slabs. Bob Edited by NJ Bob
12/12/2012 8:47 pm
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Bedrock of the Community
United States
20753 Posts |
 guaranteed this will stop all toning or further toning. Or just use a 2x2 and seal all edges well. 3M taped should work. |
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Pillar of the Community
United States
2120 Posts |
Fioti, your avatar is a coin!! Thats awesome, do have any whole pics of it anywhere?
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Bedrock of the Community
United States
17884 Posts |
Quote:
Place coin in Air-tite, Air-tite in 2x2, 2x2 in archival page, page in binder, binder in Ziploc type bag with desiccant and cleaned sacrificial copper coin. And then store be bag in a relatively cool environment that keeps a steady temperature. |
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Replies: 16 / Views: 2,847 |
Posted 11/20/2012 10:57 am
