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 Replies: 20 / Views: 3,959 |
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Bedrock of the Community
United States
12437 Posts |
The problem is not the packaging, it is the storage conditions the coins have sat in for the past ~30 years. Those sets have been exposed to a humid environment.
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Moderator
 United States
189969 Posts |
The proof set lenses are not and have never been air tight. If they are exposed to high humidity for a long time the moisture will get in. Where was this set stored for the last 27 years?
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Valued Member
 United States
114 Posts |
Got it! Thought that they were Air tight. Years ago, I opened my safe and saw a coating on a leather case I had in there. I cleaned it all up and have had a desiccant ever since. My bad. Oh Well. Thanks for clearing this up. Operator error! - Warm best regards! - Del
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Moderator
United States
189969 Posts |
Do you keep the safe indoors where it is climate controlled? This is preferred to a garage, basement, attic, etc. Also, some safes, especially if fire rated, contain moisture in the insulating material. This is to protect paper documents.
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Bedrock of the Community
United States
94367 Posts |
Sorry!  to the CCF! |
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Bedrock of the Community
 United States
12866 Posts |
Wow, those are some chewed up cents. Good call on the desiccant - you have to be fastidious about that in a humid climate. And make sure to keep it fresh (replace or dry it out periodically). |
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Bedrock of the Community
Canada
24885 Posts |
Illustrating ... If you keep coins in a safe ,be sure ..you have those inside  |
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Valued Member
United States
114 Posts |
 Been using this and when it changes from orange to green, I can rejuvenate it by placing it in the oven. Thanks all for you answers and suggestions as well as the warm welcome! In Joy, Del  |
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Valued Member
United States
114 Posts |
Now that I know the cause of the damage, what is my next step?
1. Take it apart and clean it with?
2. Leave it and just realize the value has been lowered?
Thanks!
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Valued Member
United States
119 Posts |
I would replace and buy new sets for the ones that are ruined.
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Valued Member
United States
119 Posts |
My coins were in a suitcase that I carried with me if I was gone for a few day. We were at the lake loading a boat and my suitcase fell out of the truck and went in the lake. A friend jumped in and retrived the suitcase. I was blessed only 1985, 1990, 1987 and 1983 sets were affected. The penny in each set started to turn green. That is why I said to replace.
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Pillar of the Community
United States
3328 Posts |
"Nummi rari mira sunt, si sumptus ferre potes." - Christophorus filius Scotiae
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CCF Advertiser
United States
1533 Posts |
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Valued Member
United States
114 Posts |
I understand that to keep my series of proof sets sequential, replacing would be the path.
Yet, with the existing damaged set, the rest of the coins are fine.
One thought is that I take apart the holder for the penny use a process to remove the residue and halt the progression. Here's what the maker of Verdi-Care recommended:
First you need to make sure you have verdigris. Often people mistake a green residue for verdigris. Always verify the substance is verdigris by following what I call the SOLVENT POLARITY LADDER. Start at the top of the list and work down one solvent at a time. DO NOT MIX ALL OF THESE SOLVENTS TOGETHER! Soak the coin in the following solvents for 10-20 minutes EACH to see if the residue can be removed. These are all coin safe chemicals.
Distilled water
Acetone (do NOT use fingernail polish remover - use 100%)
Xylene (at most hardware stores)
If the residue was removed be happy! You didn't have verdigris!
If you choose to neutralize and halt the verdigris, I suggest the following steps:
Add just a few, tiny grains of baking soda to about 20-mL (about 2 tablespoons) of distilled water and dissolve.
Soak the coin in the solution for about an hour. Make sure all of the verdigris is exposed to the solution.
Remove the coin, rinse with fresh distilled water and pat dry with a coin-safe towel (do not rub).
Soak the coin in a high-grade acetone (do NOT use fingernail polish remover) for about 5 minutes. (This will dehydrate the verdigris. Water is a key component in verdigris formation and growth.)
Remove the coin and allow it to air dry for about a minute. Acetone evaporates QUICKLY.
Immediately store the coin in an Air-Tite brand capsule (or equivalent). Water and air are the feed materials for verdigris formation. If they are kept away from the coin, the verdigris cannot grow.
Yes, the set would always have that "character" but at least I saved it.
The other thought is I split it up and manage the other perfectly fine coins individually?
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Valued Member
United States
114 Posts |
Understand replace to keep series intact.
What about the damaged sets, clearly the other coins are fine. If I were selling it, I could break out the coins individually and sell them.
Another thought is to break out the damaged coin, remove the residue and stop the degradation using this technique from the maker of Verdi-Care:
THE FIRST STEP TO CONSERVATION
First you need to make sure you have verdigris. Often people mistake a green residue for verdigris. Always verify the substance is verdigris by following what I call the SOLVENT POLARITY LADDER. Start at the top of the list and work down one solvent at a time. DO NOT MIX ALL OF THESE SOLVENTS TOGETHER! Soak the coin in the following solvents for 10-20 minutes EACH to see if the residue can be removed. These are all coin safe chemicals.
Distilled water
Acetone (do NOT use fingernail polish remover - use 100%)
Xylene (at most hardware stores)
If the residue was removed be happy! You didn't have verdigris!
If you choose to neutralize and halt the verdigris, I suggest the following steps:
Add just a few, tiny grains of baking soda to about 20-mL (about 2 tablespoons) of distilled water and dissolve.
Soak the coin in the solution for about an hour. Make sure all of the verdigris is exposed to the solution.
Remove the coin, rinse with fresh distilled water and pat dry with a coin-safe towel (do not rub).
Soak the coin in a high-grade acetone (do NOT use fingernail polish remover) for about 5 minutes. (This will dehydrate the verdigris. Water is a key component in verdigris formation and growth.)
Remove the coin and allow it to air dry for about a minute. Acetone evaporates QUICKLY.
Immediately store the coin in an Air-Tite brand capsule (or equivalent). Water and air are the feed materials for verdigris formation. If they are kept away from the coin, the verdigris cannot grow.
It will still be a damaged set.
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Replies: 20 / Views: 3,959 |
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Posted 09/11/2017 12:02 pm
