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Help! Old Coin Album With PVC Pockets!

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Valued Member

United Kingdom
107 Posts
 Posted 03/31/2009  4:59 pm Show Profile   Bookmark this topic Add middenmess to your friends list Get a Link to this Message Number of Subscribers
Just dug out an old album of coins that I haven't looked at in quite some time and horrified to find that many of the PVC pockets are degrading and 'melting'.
Some of the copper and silver coins have a sticky residue on them--what is the best way to stop any further deterioration and ''clean' the mess off them?
Bedrock of the Community
United States
20753 Posts
 Posted 03/31/2009  5:49 pm  Show Profile   Bookmark this reply Add just carl to your friends list Get a Link to this Reply
1. Take all coins out as soon as possible.
2. Use the Search heading at the top and type in Acetone, then cleaning coins and/or coin cleaning.
3. Purchase a newer type of Album such as Whitman or Dansco for your coins.
4. Check the location of where you had that album or albums to see if there is some reason for the melting such as high heat area.
5. Do not put any new albums in that location until you find out what may have caused any plastic to melt.
6. Take some photos of your coins if possible and try to show them here.
7. You stated Copper and Silver. What kind of Album had both in there?
And why are you using blue for printing?
Valued Member
United Kingdom
107 Posts
 Posted 03/31/2009  6:12 pm  Show Profile   Bookmark this reply Add middenmess to your friends list Get a Link to this Reply
1.All coins removed--luckily they were only lower value UK coins but 'old friends' none the less!
2.Read a few pages on using acetone so will do that tomorrow when the shops open.
3.Yep
4.No heat source anywhere near the album which was in metal deed box.
5.
6.Will do.
7.A 'Collecta C1 Coin Album' with varying size page leaves-----From my early coin collecting times in the 1960's when PVC was 'state of the art'!! Album was probably older than some of the coins!
No particular reason to use blue--14 colours to choose from in the format toolbar and blue was one of them.
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SsuperDdave's Avatar
United States
23522 Posts
 Posted 03/31/2009  6:29 pm  Show Profile   Bookmark this reply Add SsuperDdave to your friends list Get a Link to this Reply
Acetone, stat!

Be careful with this process - it sounds like you're needing almost a "production-line" effort here, and that leaves you open to small mistakes and possibly under-treating the individual coins.

Acetone will reward you for a small mistake by burning down your house. Do not forget this.

It will not damage your coins, regardless of how long you leave them immersed. However, especially in the first bath, it's possible for the contamination to re-adhere to the coin if left too long. Initial dip for an hour, rinse in fresh acetone, re-immerse in a second solution. Depending on how many coins you need to treat, you could go through quite a bit of acetone, and this process will create a lot of vapors, so be extremely attentive to ventilation.

How "green" is the residue?
Valued Member
United Kingdom
107 Posts
 Posted 03/31/2009  7:00 pm  Show Profile   Bookmark this reply Add middenmess to your friends list Get a Link to this Reply
Will use acetone outdoors!
About 60 coins affected--mostly just 'sticky' at the moment.
Probably the worst affected were these two..



Help!-Old-Coin-Album-With-PVC-Pockets!

Help!-Old-Coin-Album-With-PVC-Pockets!

[Help!-Old-Coin-Album-With-PVC-Pockets!

Help!-Old-Coin-Album-With-PVC-Pockets!

Help!-Old-Coin-Album-With-PVC-Pockets!
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SsuperDdave's Avatar
United States
23522 Posts
 Posted 03/31/2009  7:22 pm  Show Profile   Bookmark this reply Add SsuperDdave to your friends list Get a Link to this Reply
Copper tarnish (verdigris) resembles PVC contamination, but in this case it's likely PVC. I'm afraid you might find actual metal damage under areas like the worst of that half-crown, but even that's preferable to allowing the process to continue.

Exercise due caution, and I wish you luck.
Bedrock of the Community
United States
20753 Posts
 Posted 04/02/2009  10:41 am  Show Profile   Bookmark this reply Add just carl to your friends list Get a Link to this Reply
Also, again you should check the area or item where those coins were stored. Possible contamination is PVC but as a rule that is overstated on Copper materials. In many locations where Sulfur rich coal is used in Fossil fired power stations, unless they are using the latest scrubbers and precipitators, much of the sulfur comes out as SO or SO2. In the air, with Moisture that becomes an acid. If you've heard of Acid Rain in some areas, that is the basic reason. If your coins are of Copper and for any reason exposed to such an atmospher, that process wil continue unless those coins are suffieciently protected. In such areas it is noticed by the same greenish discoloration on any Copper, Brass, Bronze pipes, statues, etc.
If your now placing those coins in an Album, I suggest you keep those Albums in a Zip lock type plastic bag. Push out as much air as possible.
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