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 Replies: 421 / Views: 65,290 |
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Bedrock of the Community
 United States
19969 Posts |
Quote:
Hi, I have just been researching Verdi-Care. I am a collector of Australasian Trade tokens from the 1850's and 60's. These pieces quite often suffer from corrosion and pitting which includes verdigris. I have tried many methods of cleaning most of which cause some damage to the piece.
The biggest problem is open pits with active verdigris. No matter how well I seem to clean out the green powder it always seems to comeback.
Is Verdigris going to be helpful in this situation? Verdigris is a vexing problem on really old coins. The primary issue is with the composition of the verdigris as it can become more complex the older it is. One of the main mechanisms for verdigris formation involves acids. The acids eat into the metal and frees copper ions for the formation of verdigris. A good method on old/ancient coins is to first remove as much verdigris as possible. After that, prepare a solution of baking soda dissolved in water (just use a little baking soda, like a third of a teaspoon in a cup of distilled water). Soak the coin in that solution for a few hours to neutralize the acids. Rinse well with fresh water and allow to dry. Cover the coin in VC, remove excess with a clean towel and let it dry for a few days. Put the coin into an air-tight holder. The anti-corrosion chemicals in VC should halt the verdigris where it is.  |
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Bedrock of the Community
United States
19969 Posts |
Quote:Have you tested your product on Eisenhower dollars? Yes, I believe it's posted in this thread somewhere. VC is safe and effective on ALL metals. Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Bedrock of the Community
United States
19969 Posts |
Quote:
would like to ask BadThat for his assistance in getting two-tree bottles of Verdi-Care. I do not directly ship out of the USA. However, you can buy using ebay and they will handle the shipping using a forwarding service ( ebay Global Shipping Program)....which doesn't involve me. |
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Pillar of the Community
United States
940 Posts |
Just used Verdi-Care for the first time. Here is one of my test subjects; a 1968-D Lincoln Memorial cent. After soaking for 12 minutes, I firmly rubbed the two affected areas with a micro-fiber cloth wrapped around the tip of a cotton swab:  Verdi-Care did pretty well with some loose gunk in the upper left . . .  . . . but not so well with some more dense gunk imbedded in the date:  BadThad, I'd appreciate your comments. |
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Bedrock of the Community
United States
19969 Posts |
For stubborn areas I like to put a drop of VC over it, let it sit for 5 minutes, then use a toothpick (while still under fluid). If the residue persists after that, it's best left alone. Chances are you won't like what's underneath.
Thanks for sharing your results!
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Valued Member
United States
324 Posts |
Instead of a toothpick I have tried a thorn from a plant and it worked very well.
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Pillar of the Community
United States
8520 Posts |
I put a drop of VC on a coin, spread it out and sometimes let it sit and soak for a week before I pick at it with a toothpick.
Oregon coin geek.....*** GO BEAVS ! ! ! ***
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Pillar of the Community
United States
940 Posts |
Thanks for the comments, everyone. I may try it on a Civil War token next.
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Valued Member
United States
324 Posts |
If you let it soak for a week why wouldn't it evaporate? We really appreciate those detailed pics.
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Pillar of the Community
United States
8520 Posts |
It's like an oil. Do you have any ?
Oregon coin geek.....*** GO BEAVS ! ! ! ***
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Valued Member
United States
324 Posts |
Yes, I have a battle and I endorse it. I have never tried it for that long assuming it would evaporate. I wonder if Bad Thad would say that after a certain amount of time the effectiveness is diminished? I mean does 24hr vs 7 days really make a difference?
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Pillar of the Community
United States
8520 Posts |
That's just my take on it. Sometimes it takes awhile to fully soak in/ penetrate the verdigris or gunk. This is just my method, works for me.
Oregon coin geek.....*** GO BEAVS ! ! ! ***
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Valued Member
United States
324 Posts |
Very well...I will try it. But, having any one of my coins in the "hospital" that long will cause me to miss it dearly.
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Pillar of the Community
United States
940 Posts |
Just tried VerdiCare on a Civil War token. The verdigris at top looked pretty loose, so I had high hopes that it would be removed. The results were quite disappointing. After soaking for 12 minutes, I firmly rubbed the affected area with a microfiber cloth. Only a trace of verdigris was removed. The verdigris was darkened by the fluid, so it doesn't stand out so much. The top image is before treatment, and the bottom image is after:  Edited by Classic Coins
05/31/2014 6:39 pm
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Bedrock of the Community
United States
19969 Posts |
Excellent pictures!
Looks like some tough verdigris, you probably won't like what's under it if you do get it off. Best left alone at this point IMO.
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Replies: 421 / Views: 65,290 |
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Posted 05/13/2014 7:33 pm
