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 Replies: 22 / Views: 3,476 |
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Moderator
 United States
16679 Posts |
For those that are new to the hobby or just don't know, certain plastic "flips" are better than others. The coins below illustrate exactly what happens if coins, in this case MS 2005 State Quarters, are kept in soft vinyl flips for any extended period..in this case, 10 years. These coins upon insertion, were blast cartwheel MS. Now, they show clear signs of PVC damage. Green edges, cloudy surfaces, and the slight plastic aroma of these inferior flips. Signs of cheap, inferior flips are: Soft, pliable to the touch with a strong odor of plastics or petroleum byproducts used in their manufacture. Some even have a bluish-purple tinge to them. Good quality flips are generally mylar, clear, and rigid to the touch. These are generally an OK solution to longer term storage. Airtites in my opinion, are still the best followed by Intercept Shield. Again, here is an example of what cheap flips can do to your collection and sadly, I see a lot of dealer inventory at shows in these.    swcoin.ecrater.com
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Moderator
United States
23522 Posts |
I sincerely hope those things got a bath immediately afterward.  Seriously, though, that stuff is contagious - it can spread by contact. |
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Bedrock of the Community
Australia
21788 Posts |
Worthwhile demonstrative experiment. Thanks for sharing.
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Moderator
 United States
16679 Posts |
Nah Dave. Want to spend but dunno.
Not worth much at this point but yeah, I should prolly isolate first...before spending :p
swcoin.ecrater.com
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Pillar of the Community
United States
5825 Posts |
Quote:
I sincerely hope those things got a bath immediately afterward Once you see the green goo (PVC) or the crusty green stuff (verdigris) the coin has already been damaged. For coins with a good catalog value removal of either is worth a shot. For low value coins it's better to replace them -- and then maybe use the damaged coins as test pieces. Edited by kanga
04/06/2015 08:48 am
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Bedrock of the Community
United States
20753 Posts |
Just one more reason to stick to those cardboard flips.
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Pillar of the Community
United States
1554 Posts |
I agree just carl, cardboard is all I've ever used. Believe me or not I had Morgan dollars I put in cardboard flips in 1968 and were in a safe deposit box until 2011 and when I took them out to re holder they were in the same shape that they were originally in 1968. Absolutely no damage or difference in color etc. |
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Moderator
United States
188560 Posts |
Lesson learned, I hope. Quote:
Just one more reason to stick to those cardboard flips. I do, even for temporary use. |
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Bedrock of the Community
United States
11951 Posts |
Thanks for posting ... Good to know. I will bechecking to see
Some of mine to make sure I don't have any in the wrong
Flips.
Now that you have the coins ... And the pictures.
It might be a good lesson to see what a acetone dip will do.
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Pillar of the Community
United Kingdom
1321 Posts |
Another few years and they may end up looking like this one -  |
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Valued Member
United States
156 Posts |
A picture is worth a thousand words.
Thank you for showing this.
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Moderator
United States
16679 Posts |
You are welcome.
I'd rather destroy a few face value coins than a $100 one :o
swcoin.ecrater.com
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Moderator
United States
23522 Posts |
Quote:
Not worth much at this point but yeah, I should prolly isolate first...before spending :p
Yes, because that stuff is going to stick to your hands and the hands of the next couple people who handle it. This isn't verdigris - it's greasy and comes off easily onto you. |
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Pillar of the Community
1153 Posts |
Are all regular looking 2x2 cardboard flips safe to use?
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Moderator
United States
16679 Posts |
In acetone tonight.
CSOTUS, yes.
swcoin.ecrater.com
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Pillar of the Community
 United States
4592 Posts |
Minor correction - it's not the PVC itself that causes the problems, it's the plasticizer that makes the PVC soft. But since you can't easily tell, stay away isn't bad advice.
Buy only flips that are advertised as archival and resist the urge to reuse random ones that come your way.
Yes it's more costly in the short term, but how many ruined coins does it take to pay for the practice?
-----Burton 50+ year / Life / Emeritus ANA member (joined 12/1/1973) Life member: Numismatics International, CONECA Member: TNA, FtWCC, NETCC, EveryCountry (online) coin club Owned by three cats and a wife of 40+ years (joined 1983) Author: 3rd Edition of the Sample Slabs book, https://www.sampleslabs.info/ |
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Replies: 22 / Views: 3,476 |
Posted 04/05/2015 11:50 pm
