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Moderator
 United States
190135 Posts |
This.  |
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Valued Member
United States
61 Posts |
For those who rinse with water you can use a can of compressed air to dry it "the type use for blowing off key boards and such" or if you have an air compressor you can dry the air and use it.
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Valued Member
United States
127 Posts |
I have heard the canned air can be safe but I wouldnt use an air compressor because there can be lubricating oils in the machine/tube/nozzle that cone out with the air.
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Valued Member
Slovenia
459 Posts |
I don't want to open a new topic for this... Among some old junk at home, my mom found a silver 50 shilling Austrian 1974 Commemorative coin. While nice, it has a lot of green spots (I think because of the storage in some plastic wrap). What are those green spots and is it OK to try acetone on this? I will experiment a bit on non-value coins of course :)
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Bedrock of the Community
United States
19976 Posts |
Quote:
While nice, it has a lot of green spots Post some pictures for us. There are 3 possibilities: 1) PVC residue - easily removed with acetone. 2) Other organic residue - removed with water, acetone and/or xylene. 3) Verdigris - Can be conserved, results depend on severity. |
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Valued Member
Slovenia
459 Posts |
Will post tomorrow, I'm away from my collection today.
But I think its No. 1., because it was stored in some hard plastic folder for more than 30 years and as my mom told me, she hasn't ever took the coin out.
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Pillar of the Community
United States
1314 Posts |
Quote:
Yes there will always be stories about how great someone did with a quill, toothpick, etc. However, those may be just stories. Remember not everything you read on the internet is for REAL. I agree 100%. Not just coins, but news, conspiracies and Big Foot. Always include photos of your work.  |
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Valued Member
United States
214 Posts |
Like how the before and after cleaning even changed the date.  is cleaning what causes 44D pennies to become 14Ds? Edited by teo2015
10/14/2015 09:29 am
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Moderator
United States
190135 Posts |
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Bedrock of the Community
United States
19976 Posts |
Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Bedrock of the Community
United States
10048 Posts |
How lint to soak? I put the coin in acetone, take out a blank 2X2, write the info I want on the 2X2, get the coin out of the soak onto a clean, cotton cloth (T-shirt), examine the coin under magnification to see if the gunk I waned gone is no longer there, use a squeeze bulb to blast any dust off of the surfaces of the 2X2, insert coin and staple. If the coin did not pass the magnification test I may try for a couple minutes. If this does not work, then its time for the microscope and porcupine quill. Quote:
Yes there will always be stories about how great someone did with a quill, toothpick, etc. However, those may be just stories. Remember not everything you read on the internet is for REAL. Yup - the quill is a real story. The "ouch" end is finer than a toothpick and seems to be more soft. A microscope lets you see the large difference in the ends your eye cannot. If you get a really skinny quill (yes - different sizes depending on where the animal grew them on itself), the tip is actually small enough to fit inside the holes of mint marks. A very (cannot emphasize this enough) scoop/push dislodges the gunk filling the hole. So carry a pair of leather gloves with you. Next time you see a dead porky, get the gloves and fill up. Remember to look for the long thin ones. One quill has lasted me hundreds of coins - literally. Like the toothpick, I have seen a piece of dirt stick to the end and scratch the coin on a micro level. But with such a small tip as compared to a toothpick, this does not happen as often. Edited by Earle42
10/18/2015 9:41 pm
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Valued Member
Slovenia
459 Posts |
Finally took time to photo that mentioned 50 schilling coin for possible acetone bath. Here it is   What do you guys think? |
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Pillar of the Community
United States
1314 Posts |
It may not fix the problem, but I would dunk immediately in acetone. Then photograph again.
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Bedrock of the Community
United States
19976 Posts |
Quote:
Finally took time to photo that mentioned 50 schilling coin for possible acetone bath. What is the composition? Acetone won't hurt, I'd do it to make sure that's not PVC residue but some of the spots look like common verdigris. Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Valued Member
United States
422 Posts |
Eventually the Acetone will evaporate. I had a clad colorized quarter and soaked it in Acetone over night, the colorization was rolled up and free from the coin and the container was dry. No visible damage to the coin at all.
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Replies: 27 / Views: 4,682 |
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Posted 10/12/2015 10:32 pm
