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 Replies: 7 / Views: 4,910 |
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New Member
United States
42 Posts |
Hello coin collecting friends! I haven't been on here in quite a while. I came back with a question...
I've purchased some albums for my coin dollars (Sacagawea and President) and quarters. The coins are proofs I've purchased from the mint. I prefer viewing them in folders and albums all together by type instead of in the (air-tight?) cases the mint sends them in.
I know they will be a little less protected in the albums, but that's not normally a major concern for me- except that I hear that some of the dollar coins tend to rust! So, should I expect the dollar coins to start rusting if I take them out of their air-tight cases and expose them to oxygen? If so, I might have to rethink this...
Thank you!
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Pillar of the Community
United States
1531 Posts |
No, the gold metal plating on the coins will not rust...
Why would the mint make a coin that rusts?
Heck, if I'm wrong, please tell me because I'm just using logic here. I don't know the specific metal surrounding the coin.
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New Member
 United States
42 Posts |
Thank you for your reply, Cruisinfusion. I ask because I see comments like these: https://goccf.com/t/173168#1597510"They should've just stuck with George Washington, enlarge the coin to make it noticeable, give it an alloy that doesn't rust, and make that the standard." https://goccf.com/t/173168&whichpage=2#1599664"With the Presidential series I particularly don't like well-circulated examples that have oxidized to that oh-so-lovely color of..."yuck"? Nice to find a shiny one though." |
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Pillar of the Community
United States
589 Posts |
Quote:
No, the gold metal plating on the coins will not rust...
Why would the mint make a coin that rusts?
The coins are manganese-brass cladded over a pure copper core. There is no gold. As far as "rusting" goes, only iron corrodes to "rust", and although I could be wrong, corrosion of other metals I don't think "look" like rust. Take copper oxides (brown cents, verdigris, etc.) and silver sulfides (or even silver oxides), they don't get "rusty" in my mind...verdigris and bronze disease can get nasty, but I wouldn't consider them to be rusting. The only real danger to manganese-brass dollars is the oxidation or bronze disease (keep them away from chlorides). So long as they are kept out of air, they'll be fine. Humidity can be a problem, so take that into account, but for the most part they should be fine. Side mini-rant: If only they'd have been made out of Nordic gold...although that's got intellectual property issues and would require licensing by the US. Nordic gold, after all, is supposed to be tarnish resistant, although I have a 50 euro cent that isn't as shiny as I think it should be (but I don't have any true straight-from-the-mint examples for comparison) |
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Bedrock of the Community
United States
20753 Posts |
Quote:
Why would the mint make a coin that rusts?
Your kidding. Ever see the 1943 Lincoln Cent. Quote:
As far as "rusting" goes, only iron corrodes to "rust", and although I could be wrong, corrosion of other metals I don't think "look" like rust. Yet many other metals also take on appearances of rusting. Rusting is in reality only Oxidation. AND all metals rust of can Oxidize. Some more readily than others. Also, contrary to popular believe, Gold also does in a way RUST. Not with Oxigen but with numerous other gasses. Gold combines with Fluorine, Chlorine, Cyanide, etc. Meanwhile, back to the Coinster Question. Using what is called a Folder for coins allows anything and everything to get to your coins. To start with you have to push them into the slots and usually with your fingers. This alone leaves acids and oils on the coins. Your breath, spit, coughing, sneezing on those coins too doesn't really help them a lot. And it is amazing that when you show them to people, for some strange reason, they just have to touch them. Sort of like what people do at car shows. Just have to touch. |
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Pillar of the Community
United States
1531 Posts |
Edited by Cruisinfusion
03/30/2014 10:41 pm
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New Member
United States
42 Posts |
Quote:
Also, Meanwhile, back to the Coinster Question. Using what is called a Folder for coins allows anything and everything to get to your coins. To start with you have to push them into the slots and usually with your fingers. This alone leaves acids and oils on the coins. Your breath, spit, coughing, sneezing on those coins too doesn't really help them a lot. And it is amazing that when you show them to people, for some strange reason, they just have to touch them. Sort of like what people do at car shows. Just have to touch. I know what you mean about the touching. And now that I look at my quarter folder- I see the "toning" or "rusting". Of course, it doesn't matter. Those coins were taken from circulation in far from pristine conditions anyhow. But my dollar coins are from proof sets. What could I use to display my coins together that protects them sufficiently? How "air-tight" does a container have to be to protect the coins from rusting/toning? What about this? http://www.coinsupplystore.com/dans...dollars.htmlOr this? http://www.shopnumismaster.com/supe...-albums-pd50In any case, I don't really want to keep them locked up in their separate plastic cases. I'd enjoy them much more together in some sort of album. But I don't want them to look terrible in a few years either. |
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Bedrock of the Community
United States
10034 Posts |
Quote:
Why would the mint make a coin that rusts?
The copper plated zinc cents are subject to zinc rot - and this is known before making them. |
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Replies: 7 / Views: 4,910 |
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Posted 03/30/2014 12:43 am
