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 Replies: 24 / Views: 4,128 |
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Pillar of the Community
United States
914 Posts |
Also, I've had success with soaking the coin in distilled water, then freezing it, thawing it, repeat.
The water molecules expand when frozen and can sometime break off large chunks of gunk.
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Pillar of the Community
Australia
2830 Posts |
G'day Vaslin, never heard of that one.
An interesting application of the laws of physics.
Full marls for lateral thinking.
I once saw a reference to this book: I don't have a copy, but perhaps a forum member is familiar with it -
"Coin Chemistry
Including Preservation and Cleaning
by Weimar W White
The detailed text is highly educational and informational, and combined with the detailed photos make a great reference.
6 " x 9", 72 pages, 2004, hardcover."
I've ordered an "ultrasonic" cleamer. I expect to receive it this week. I'll let you know how I get on. I'm only hoping to clean off decades of crud: not many of my coins have altered metallurgy, such as verdigris.
Peter in Oz
Peter in Oz
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New Member
Australia
9 Posts |
This subject has recently been discussed on the Oz ebay Coin & Stamp forum. Rather than repeat professional advise please visit thread and leave comment. Here is the link: http://forums.ebay.com.au/thread.js...192282451711My ID currently there is brunswickwa I've been treating the coin cancer [i.e. verdigris] with an easily forgotten 2 week soak. Works well on decent grade items. The old crusty one in OP... is sadly best stitched into the bottom corner of a curtain to help em hang better now. You will get a better one for less than $5. Verdigris will chip off an affected coin and spread to others if is not carefully isolated. It corrodes badly. From my experience and research in environmental activism, I wouldn't even think of handling any VOC [volatile organic compound] or any associated compounds. This stuff is regarded as a possible carcinogen. Xylene is simply an unacceptable health hazard. Please consider your health first. Best be gentle and give the old fellows time to soak. |
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Pillar of the Community
Canada
1106 Posts |
Am I the only one curious about the story of where they came from and how they got buried there.?
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Valued Member
Australia
432 Posts |
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Rest in Peace
Australia
661 Posts |
SueS.
G'day and welcome.
Is that signature line of yours original or does it belong to someone else?
rtegards,
Edited by muckeye
12/20/2007 07:12 am
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Valued Member
Canada
100 Posts |
Hi, I've tried dipping just circulated coins in vinegar and rubbing them gently whit baking soda then rinsing them in regular water and it seem to be doing the trick. but I don't know if I should or not do it to my good coins. I've heard so much that I shouldn't clean them. I'm confuse!
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Pillar of the Community
Australia
1014 Posts |
I think its advisable not to clean the coins from circulation. I don't think they are needed and I used to do that although I have stopped now.
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Valued Member
Canada
100 Posts |
thanks, that's what I thought.
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Pillar of the Community
Australia
1014 Posts |
Yea cause from what I gather from the very kind people on here, you might scratch the surface and scrape the metal away or something like that, which depreciates the coin value, and I'm sure we all don't want that to happen do we? :P
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Pillar of the Community
 United States
2703 Posts |
Do not clean your coins. Once you think you know enough to clean them, you are still better off not cleaning them. When you think you are an expert and can do no wrong, and you have read the advice from members here on how to use acetone safely, then you could try dipping them in acetone. Even then, they might not look any better and you can get along fine without ever cleaning a coin. Do not clean your coins.
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Pillar of the Community
United States
591 Posts |
I have a roll of 44s that were not dipped but soaked in vineagar for like 2 days. Ruined them IMO I have almost thoguth of using them as change just so I don't have the reminder of my better half trying to suprise me with nice bright coins. Was not a good day at the house when I got back home lol.
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Pillar of the Community
Australia
1014 Posts |
Haha I would think vinegar is a bit too acidic, just a thad. :P Sorry for your lost anyway.
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New Member
 Australia
17 Posts |
Just thought I'd update on this thread...
I decided that the electrolosis method left a lot to be desired, the results were completely random and resulted from removing all the verdigris to barely touching it, to coins looking almost no different to coins going yukky and shiny. So the majority of the coins are pretty much uncleaned other than being left in olive oil for a while and a general rub to get the dirt off.
The story behind the coins? I live in a heritage listed house in a national park - in pre-decimal days, the house dwellers were responsible for collecting a penny from visitors to the park. A bucket sat beside a hedge and visitors would throw a penny in the bucket. Some coins didn't make the bucket, some ended up in the hedge and couldn't be retrieved. This hedge has since been removed and my children and I ran a metal detector over the hedge area and found over 80 lost coins. Mostly pennies, few halfpennies and a threepence bit.
I have framed most of the coins with one lot now being kept in the information centre in the park with a little story about how they got there. Another lot are framed and are in the house - as far as I am concerned, they belong to the house and if we move, the coins will stay here with the house or be handed over to the park. The rest of the coins have gone up to Old Goverment House here in the park and are being used as part of a display.
I will get photo's at some point of the end results. Thanks again for all your help.
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Pillar of the Community
Australia
655 Posts |
Very interesting. Thanks for the info!
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Replies: 24 / Views: 4,128 |
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Posted 10/15/2007 11:28 pm
