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 Replies: 43 / Views: 9,608 |
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Pillar of the Community
  United States
5953 Posts |
OK after 24hrs in the Ultrasonic cleaner with Verdi-care as the solution. I think there is an improvement. will have to leave it a little longer to finish drying.   |
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Bedrock of the Community
United States
19969 Posts |
YES! Now, that's more of what I expected! I'll try to make some before/after pics later so it's easier to compare.
Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Pillar of the Community
United States
5953 Posts |
I have just taken some more pics and will post them in a few mins. Is it worth giving it another 24hrs in the ultrasonic cleaner? Takes a 60mil bottle to cover the coin but I assume I can use the same solution again and again until it becomes dirty...   Edited by nohope587
06/10/2011 3:41 pm
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Bedrock of the Community
United States
19969 Posts |
Whoa....don't use a whole bottle! For an ultrasonic, put about an inch of water in the bath, put the coin into a smaller container, add just enough VC to cover the coin, then put that into the bath. It should only take a few milliters of VC to treat a coin.
Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Bedrock of the Community
United States
19969 Posts |
I whipped up these real quick:   |
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Pillar of the Community
United States
5953 Posts |
Will Do as you suggest with the smaller container inside the cleaner.
Another 24hrs or am I at the point where it will do no more good?
If so I'll move onto the next candidate...
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Bedrock of the Community
United States
19969 Posts |
VC is pretty gentle, it shouldn't harm the coin. However, I don't like over-exposing any coin to liquids, even water, as any liquid may produce adverse effects. A coin patina can only take so much before it starts to change.
You might want to try pre-soaking the next coin in acetone and then xylene before soaking in VC. This coin appears to have had some sort of residue on it, perhaps from previous attempts at conservation. Removal of the verdigris layer under the wreath revealed a hazy area that was not apparent in the before pictures. As old as these are, I wouldn't be surprized if others had tried a few things on them sometime in the past.
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Pillar of the Community
United States
5953 Posts |
OK here is coin #1 after it has dried. I have to say its a significant improvement over the original.   Candidate #2 is this one. Same procedure or something different this time?   |
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Pillar of the Community
United States
5953 Posts |
Coin1 before and after  |
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Bedrock of the Community
United States
19969 Posts |
Thanks Richard, definate improvment.
The second coin is unbelievably TOUGH. That looks more like dirt crammed onto the surfaces. I'd first soak it in distilled water for 24 hours to see of some of the dirt comes off. Then dry and go right to xylene for a couple hours. Finally, do the VC treatment. That's gonna be a tough nut to crack! It has some serious problems.
Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Pillar of the Community
United States
5953 Posts |
Hey if it was easy anyone could do it.... For the tough nuts I have to seek expert advice...
Off to soak in distilled water...
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Pillar of the Community
United States
5953 Posts |
OK here is coin #2 after a 24hr soak in distilled water. then a rinse in acetone+Xylene Of to its 24hr soak in the ultrasonic cleaner with Verdi-care   Edited by nohope587
06/12/2011 10:18 pm
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Bedrock of the Community
United States
19969 Posts |
Perfect, you can see how much crud the water, acetone, xylene took off. Funny, now you can see a finger print on the reverse that was previously hidden by the crud. This coin shows the importance of the conservation process order! Excellent job so far Richard. You're on your way to becoming a conservation expert! The more you practice, the better you will get at figuring out the steps needed for each specific coin. For me the hardest part is analyzing the coin because they are all very different, yet similar in certain ways. Once you can look at a coin and analyze in your mind what needs to be done, you're on your way!
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Pillar of the Community
United States
1348 Posts |
ok so acetone and xylene won't affect the coin at all?
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Bedrock of the Community
United States
19969 Posts |
Both are well regarded as coin safe solvents. However, any conservationist must use good judgement as excessive soaking in ANY liquid (even water) may produce adverse effects. There's no replacement for experience, the more you practice and understand the various problems coins have, the better you'll be at conservation.
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Replies: 43 / Views: 9,608 |
First Page
Posted 06/10/2011 3:26 pm
