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 Replies: 25 / Views: 1,585 |
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Pillar of the Community
  United States
2682 Posts |
I see your point, that if I really don't want to affect the whole coin I should try only treating only the small area. However in my experience VC is faster penetrating than olive oil and less likely to cause the coin to turn dark. So I'll get some pipettes and try a drop of VC next time.
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Moderator
United States
164010 Posts |
I disagree with the disagree, but it is just my personal preference. I will not evangelize.  |
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Bedrock of the Community
United States
19672 Posts |
Looks like a great conservation! I would leave the VC on the coin and put it in a holder.
Agree with your conclusion, just a small drop of VC directly on the residue with a toothpick would have been best. You don't need a pipet, just technique that's easy to practice:
1) Wet the tip of a toothpick by hanging a drop from the VC bottle, it will quickly absorb the VC not even using the full hanging drop.
2) Pull the bottle away and keep the toothpick a bit horizontal.
3) Lightly touch the tip of the wet toothpick to the center of the residue, it will form a dome of VC over the residue. (Be careful not to get VC anywhere else on the coin)
4) Allow to sit for 5 minutes.
5) Gently touch a paper towel corner to the dome to remove excess VC (keeps it from spreading much)*.
6) Take the the wet end of the toothpick and twist it against the residue taking care not to use much pressure. If it gets too dirty, flip to the other end, wet it a little with VC and continue.
7) Dab off anything left, I like a microfiber towel, rinse with isopropanol and let dry.
*Sometimes I leave the dome (thick or dry residue) and use a toothpick but it's hard to keep the VC from spreading. It also depends on the individual coin's patina. VC can damage toning.
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Bedrock of the Community
United States
19672 Posts |
An except from my book: Quote:
As a result of its popularity, I have devoted a large section of this book to it in order to help the layman understand how it works. Olive oil has been a long time favorite of collectors for the conservation of coins. You will read everywhere people recommending its use to remove coin surface contaminants. If used carefully, it has many advantages and I've seen collectors successfully conserve coins using EVO. On the flip side, I've also seen collectors damage their coins using it. The main problem with EVO is consistency from bottle to bottle. The contents can vary greatly from batch to batch. EVO is made for eating and not for chemistry!
EVO is a mixture of many chemicals, mainly triglyceride which is three fatty acids attached to the glycerol molecule. Oleic acid (CH3(CH2)7CH=CH(CH2)7COOH) is present in high amounts in EVO, perhaps 50% or greater. Also present is Linoleic acid (< 10%) and Linolenic acid. There is also a small percentage of water. Being a natural product, it also contains other fatty acids, volatile organic compounds, vitamins, water-soluble organics, oil soluble organics and finely ground olive. It's quite a mixture! Here's what some of the molecules look like in chemist speak:.....
Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Pillar of the Community
United States
2682 Posts |
Thank you for sharing this technique. I will definitely try it out when the opportunity arises.
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Bedrock of the Community
United States
94367 Posts |
Most interesting thread for sure.
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Moderator
United States
164010 Posts |
Thank you for your expertise, BadThad.  |
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Pillar of the Community
United States
2682 Posts |
BadThad, Has your book been published? I didn't find it on your web site.
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Bedrock of the Community
United States
19672 Posts |
Quote:
BadThad, Has your book been published? I didn't find it on your web site. No, I am still working on it, labor of love....it's a project for retirement. I want self publish and make free for all. My parting gift to the world when I leave. 
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Bedrock of the Community
United States
19672 Posts |
Quote:
Thank you for sharing this technique. I will definitely try it out when the opportunity arises. Learn to spot treat your coin problems, it's the most powerful tool you have with VC IMO. Most coins usually only have a problem or two - it's always best to just go directly after the the spots. It's quick, effective and cheap! Over 2024 I've only used just about 15 mL of VC by expertly spot treating issues. That was probably several hundred coins! I have removed very light verdigris from MS coins using just a VC moistened toothpick, didn't even open the bottle, it was one just laying on my desk! Here's my loose order of precedence when using VERDI-CARE™: 1) Spot treat - minimal product use, maintains the original patina. 2) Dome soak - form a dome over the area, let it stand, work area with toothpick while VC on the coin. If you want to control spreading, dab off the dome with the corner of a piece of paper before using the toothpick. 3) Towel method - wet a suitable microfiber towel in a spot slightly larger than the circumference of the coin. Gently rub the coin in a rotating, back and forth motion against the wet spot. 4) Soak - uses the most product but sometimes you just have to when it's moderate-heavy verdigris or other stubborn residue. Soak for the least amount of time you can for a maximum of 24 hours. It's super easy to check the progress, just take the coin out periodically and look. If the soak solution starts getting ugly, dump and refresh with new fluid. Let me know if you have any more questions!
Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
Edited by BadThad
09/17/2024 6:32 pm
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Bedrock of the Community
United States
94367 Posts |
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Moderator
United States
164010 Posts |
Quote:No, I am still working on it, labor of love....it's a project for retirement. I want self publish and make free for all. My parting gift to the world when I leave. 
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Bedrock of the Community
United States
17494 Posts |
I trust that using Verdicare on a donkey doesn't produce a mule... My apologies, still early.
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Moderator
United States
164010 Posts |
Quote:
I trust that using Verdicare on a donkey doesn't produce a mule... My apologies, still early. 
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Moderator
United States
71801 Posts |
I may have to try it this way on some of my more 'crusty' coins.
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Replies: 25 / Views: 1,585 |
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First Page
Posted 09/05/2024 09:33 am
