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 Replies: 17 / Views: 2,296 |
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Pillar of the Community
United States
1304 Posts |
I received a 1927-S Peace dollar in the mail today that I ordered a few days ago. While looking it ove I noticed a dark area on the reverse. Whats strange is it seems to be in a straight line. Here are some pics so you all can see what I mean....   Has anyone ever seen anything like this? What is it and what causes it? Would a dip in some acetone help? Thanks for any answers you can provide.  |
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Pillar of the Community
United States
2661 Posts |
This is just a guess, but an educated one at least. I think that it is from where it was in someones drawer and a piece of paper or an envelope was laying over it. I have seen something like this before and sulphur from the paper caused the discoloration on the other examples I have seen. Those were much worse and some were just plain black.
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Pillar of the Community
United States
4846 Posts |
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Pillar of the Community
 United States
1304 Posts |
Thanks for the info. Is there any way to remove it without hurting the coin?
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Pillar of the Community
United States
817 Posts |
My guess is tape.
It looks like there is some tape residue on the eagles back.
You might be have to dip it. That is probably the only way to get rid of the discoloration.
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Pillar of the Community
United States
1304 Posts |
I got it soaking in some Acetone now. I will be back in a hour and let you all know it went.
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Valued Member
United States
460 Posts |
I agree with the tape theory. I have a peace with the same thing.
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Pillar of the Community
United States
3755 Posts |
I would say its more likely dipped wrong. Half of it dipped longer than the other half.
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Pillar of the Community
United States
1304 Posts |
Well I pulled it out of the acetone and gave it a rinse with distilled water. It seems to be a little better, but a funny thing about it is the less light in the room the more it shows up. I put it back in the acetone for another 1/2 hour. Should I keep repeating this for the next few nights?
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Rest in Peace
United States
9104 Posts |
put it in acetone, cover it to prevent evaporation, look at it in a week.
that will fix glue, jewelustre will remove tarnish.
dimes and quarters from lenten/bank folders often tarnish in that pattern.
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Moderator
 United States
14463 Posts |
A few days ago, I saw a Morgan dollar for sale online that had about the same markings (more pronounced) as in the original post. |
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Pillar of the Community
United States
1348 Posts |
I think the acetone bath will do the job.
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Bedrock of the Community
United States
12437 Posts |
Something covered the coin at one time(tape, paper, cardboard?) causing the unprotected areas to tone at a greater rate than the covered areas. I do not think it was dipped wrong since the coin is striped and not half-and-half. A short soak in acetone would remove any residue left but repeated long term soaks are unnecessary. Acetone will either remove a substance within minutes or it will not work at all.
I will add this- a longer soak in acetone will do no harm, it is just simply a waste of time and solvent.
Edited by biokemist6
06/21/2011 3:52 pm
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Pillar of the Community
United States
1304 Posts |
Thanks Bio, I won't soak it anymore. |
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Moderator
United States
23522 Posts |
Quote:
Something covered the coin at one time(tape, paper, cardboard?) causing the unprotected areas to tone at a greater rate than the covered areas. This. You've already undone any bad things the tape did to the coin, but the only way to cure the uneven finish is to step into processes you really don't want to be doing to that coin. |
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Pillar of the Community
United States
3276 Posts |
i agree with tape. I saw some Peace dollars for sale on ebay with the same markings, but a little darker. the seller noted that there was tape on the coins. |
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Replies: 17 / Views: 2,296 |
Posted 06/20/2011 6:46 pm
