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 Replies: 20 / Views: 1,207 |
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Pillar of the Community
 United States
4704 Posts |
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Moderator
 United States
164490 Posts |
It looks like it to me. My pocket piece had some and Verdi-care removed it. I cannot remember where it was—maybe around IGWT—been almost six years now.   |
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Pillar of the Community
United States
1862 Posts |
Wow, is this a 1972 type 2? Green deposits are usually the result of PVC contamination. Try an acetone soak first.
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Moderator
United States
164490 Posts |
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Wow, is this a 1972 type 2? It is. How did I overlook that! 
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Bedrock of the Community
United States
17530 Posts |
Yes, try the acetone soak. Can't hurt.
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Moderator
Australia
16345 Posts |
While green deposits on the fields and high points are often a sign of PVC, little circular spots like this are very highly indicative of corrosion, not PVC damage. Droplets of a mildly corrosive liquid - fruit juice, coca-cola, or even just salty water - was splashed onto the coin, which then sat there for quite some time, causing the corrosion.
You might get lucky and the damage is minimal, and thus easily removed with MS70 or a similar reagent. But I'd still be reluctant to sell the coin without revealing to the buyer that it has been treated.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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Pillar of the Community
 United States
4704 Posts |
Thanks for the recommendations, guys. I had already tried pure acetone to zero effect. I think Sap cleared up my confusion over the nature of the spots. Specifically, I wasn't really sure if verdigris refers to a patina or also applies to this kind of corrosion. I agree that something was splattered on the coin. You can actually see a pattern of spray if you look closely. The coins were stored in an attic, and were circulated, so who can say for sure what splattered onto the surface? Given the light circulation, it could very well have been something over 50 years ago. As MisterT says, this is a 1972 Type 2 Eisenhower dollar (the rare proof reverse, FS-901). I am offering it on ebay, along with another Type 2 from the same hoard with similar spots. The description clearly calls out the verdigris spots, and the pictures clearly show the green and dark specks. I am not going to treat the coin—that is beyond my expertise, and some buyers might prefer the green spots to chemical treatment. |
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Moderator
United States
72197 Posts |
good luck on your ebay sale..  |
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Moderator
United States
164490 Posts |
Quote: I am offering it on ebay, along with another Type 2 from the same hoard with similar spots. The description clearly calls out the verdigris spots, and the pictures clearly show the green and dark specks. I am not going to treat the coin—that is beyond my expertise, and some buyers might prefer the green spots to chemical treatment. Good choice. Let the buyer make the decision.
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Bedrock of the Community
United States
19676 Posts |
Absolutely, classic verdigris.
PVC plasticizer actually forms verdigris via a hydrochloric acid reaction. The ONLY differentiation between normal verdigris and PVC is the addition of some organic residue from the PVC plasticizer.
Edited by BadThad
01/15/2025 8:49 pm
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Pillar of the Community
United States
4704 Posts |
Thad, do you have any before and after pictures of treating such spots with VerdiCare?
I accepted a buyer offer of $30 for that Ike. I consider it a reasonably fair price for an AU 1972 Type 2 Eisenhower with the blemishes. Oddly, that coin got all the attention after listing, and the one I regard as nicer still has 0 views.
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Moderator
United States
164490 Posts |
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I accepted a buyer offer of $30 for that Ike. I consider it a reasonably fair price for an AU 1972 Type 2 Eisenhower with the blemishes. Fantastic! Quote:
Oddly, that coin got all the attention after listing, and the one I regard as nicer still has 0 views.  
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Moderator
United States
72197 Posts |
very nice Type 2 Ike Brand |
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Bedrock of the Community
United States
19676 Posts |
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Thad, do you have any before and after pictures of treating such spots with VerdiCare? Probably somewhere but I don't want to dig for them. The verdigris in the close-up pictures is what I'd classify as early stage. Normally it is easily and instantly (seconds) removed with VC. However, with these clad Ikes, there is always a stain or dull patch left behind if you spot treat. I've only used it on maybe 4-5 Ikes - I don't collect them. In my experience, VC removed the offending residue but at a cost to the area treated. Given my staining observations from the past. I would be VERY careful - My recommendation for the first step would be to soak the coin in distilled water for an hour - while it's underwater, gently use a toothpick on the verdigris areas. If it's light and flaky, it might almost all come off. I've done this a billion times - it works on super light verdigris. After that is done, post some pictures so I can see what's going on. PS - Do not use acetone, xylene or anything else at this stage. Verdigris salts are mostly INSOLUBLE in organic solvents. Water should ALWAYS be the first step in any conservation attempt. It's cheap, effective and very, very safe over short soaking periods.
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Bedrock of the Community
United States
19676 Posts |
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Specifically, I wasn't really sure if verdigris refers to a patina or also applies to this kind of corrosion. From a chemist's perspective, verdigris is simply a way to describe copper corrosion. Verdigris is a complex and highly variable mixture of molecules. Similarly, we usually say "rust" when we see iron corrosion. Some call the corrosion on aluminum and other metals "rust" and, technically, you could call verdigris rust too.
Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Moderator
United States
164490 Posts |
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However, with these clad Ikes, there is always a stain or dull patch left behind if you spot treat... In my experience, VC removed the offending residue but at a cost to the area treated. Which is why my treated Ike became a pocket piece. 
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Replies: 20 / Views: 1,207 |
Posted 01/14/2025 5:20 pm
