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fb101
Administrator
USA
2856 Posts |
 Posted - 07/03/2008 : 21:34:14
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In case anyone is interested in this.
This is good for those lightly tarnished eagles and coins you don't want to put wear on.
Silver tarnish is actually Silver Sulfide (Ag2S). Sulfur atoms combine with the silver and produce the brown black tarnish. In order to remove the sulfur without removing silver along with it, you have to use something that has a greater affinity for sulfur atoms than silver has, and you need a catalyst. Fortunately, this is simple.
Use a small bowl that you won't eat from again, glass or ceramic preferably. Line it with aluminum foil, matte side up. Try to get a flat spot so that when the coin goes in it lays flat. Boil water and mix 1 cup of water to 1 teaspoon of baking soda. Pour this into the boel and then drop the coin in. Let soak for about 20 minutes, but don't let the water get cold or you will get baking soda residue stuck to the coin. If necessary, change the aluminum foil and repeat for the reverse. The tarnish generally only comes off where there is phyical contact between the coin and the aluinum foil. It may take several several tries to remove a lot of tarnish, and severe tarnish may not be completely removed. The upside is, it doesn't remove any silver from the coin.
I wouldn't try this on UNCs anyway.
Lest anyone think I know something, I'll admit up front I found his on the internet about a year ago.
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Edited by - fb101 on 07/03/2008 21:38:40 |
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jadedragon
Administrator
Canada
3788 Posts |
Posted - 07/03/2008 : 22:51:18
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| Sweet and thanks - I was wondering the exact thing for dealing with some of my 90% and generic silver coins. I like shiny stuff :) |
“The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.” – George Bernard Shaw.
Why Copper Bullion ~~~ Interview with Silver Bullion Producer Market Harmony
Passive Income blog |
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Steiner
Penny Collector Member
Canada
278 Posts |
Posted - 07/04/2008 : 00:04:20
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Hello
I use this productand it work very well. Cheap also and not that much mess. Follow the instructions as this stuff acts fast and you will need to nutralize it in water ASAP.
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Steiner |
Steiner |
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wheeler_dealer
Penny Collector Member
USA
402 Posts |
Posted - 07/06/2008 : 22:30:36
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| e-z-est is what I found in my coin dealers shop this past Thursday while visiting. I was told it was a good cleaner and that if I used it I should disclose it to a buyer so as not to misrepresent the coin. |
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Steiner
Penny Collector Member
Canada
278 Posts |
Posted - 07/06/2008 : 23:16:45
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quote:
Originally posted by wheeler_dealer
e-z-est is what I found in my coin dealers shop this past Thursday while visiting. I was told it was a good cleaner and that if I used it I should disclose it to a buyer so as not to misrepresent the coin.
that is a very good point if you are going to move it you should tell them you "Dipped" the coin.
Steiner |
Steiner |
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Cleaning Silver without damage (How to)
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