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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Posted 10/30/2017 9:40 pm
