Coin Community Family of Web Sites Join Thousands of Coin, Bullion, & Money Collectors
Join Thousands of Coin, Bullion, & Money Collectors Royal Canadian Mint products, Canadian, Polish, American, and world coins and banknotes. Coin, Banknote and Medal Collectors's Online Mall Shop for APMEX Bullion on eBay!Vancouvers #1 Coin and Paper Money Dealer 300,000 items to help build your collection! Specializing in Modern Numismatics








Username:
Password:
Save Password
Forgot your Password?


This page may contain links that result in small commissions to keep this free site up and running.

Welcome Guest! Registering and/or logging in will remove the anchor (bottom) ads. It's Free!

Storage Of Silver And Bronze Coins

To participate in the forum you must log in or register.
Author Previous TopicReplies: 7 / Views: 1,469Next Topic  
Pillar of the Community
Silver101's Avatar
Canada
1081 Posts
 Posted 03/26/2022  5:27 pm Show Profile   Bookmark this topic Add Silver101 to your friends list Get a Link to this Message Number of Subscribers
Hello Everyone -
I suspect this is the wrong forum for this question but you've never steered me wrong so I'll give it a try.

I have quite around 140 coins - some of fairly high grade and some pretty rare. It has occurred to me that storage might be an issue. Some of them are graded and all of them are in proper storage containers of one kind or another. They're all lined up in a set of cardboard boxes - purchased from a local (credible) coin guy who I know.

I'm wondering if there's anything beyond that to prevent any sort of environmental damage? Worries about moisture? Anything like that?

Any suggestions would be welcome...
Moderator
Learn More...
Spence's Avatar
United States
34396 Posts
 Posted 03/26/2022  7:55 pm  Show Profile   Bookmark this reply Add Spence to your friends list Get a Link to this Reply

Quote:
I suspect this is the wrong forum for this question


Correct. We've got a spot for questions like this and that is where I'm going to move your thread.
"If you climb a good tree, you get a push."
-----Ghanaian proverb

"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz
Bedrock of the Community
sel_69l's Avatar
Australia
21786 Posts
 Posted 03/26/2022  10:45 pm  Show Profile   Bookmark this reply Add sel_69l to your friends list Get a Link to this Reply
Silver and bronze coins with nice luster should be kept in airtight capsules, if the value justifies it.
Very small airtight capsules can still be enclosed in Mylar/cardboard flips for inclusion in 20 pocket album pages. Larger capsules up to perhaps 30 mm overall diameter can be put it album pages directly, without the flip.
For top condition dollar sized coins, I enclose them in acrylic plastic sheet, sandwiched inside mylar/cardborrd flips for extra protection, and still include them in album pages.

Coins in slabs and coins in albums present almost mutually incompatible storage / display problems.
I say 'almost', because album pages for slabs are available, and thus it is possible to keep them all together in albums.

Unfortunately, writing information on a slab that relates to the coin is not easily possible, unless you use stick-on labels, and a printing machine that can produce them.

If you have a highly varied collection (as I do), covering ancients, hammered, milled and (mostly) modern machine struck coins, my strong preference is for 2x2 Mylar/cardboard flips in non PVC achival quality 20 pocket album pages. Each flip has the date when the coin was acquired, price paid, provenance (if relevant), and where needed, a brief description of the coin. Since All of the information about coin is on the flip, periodic re arrangement of the collection is easy, because all of the information relating to the coin re locates with it.

Because I am confident in grading coins for myself, I am personally not keen on slabs. Thus, none of my 4,000 or so coins are slabbed, although they cover a value range of $1 to perhaps $5,000 per coin.
Nevertheless, due to it's value, I may have to consider having my first coin to be slabbed by NGC, to further prove authenticity, provenance and protection, and to store the coin separately from the rest of my collection.
I have put in a bid at an internationally recognized specialist numismatic auction, for a coin in the $20-$30 thousand value range.
Edited by sel_69l
03/26/2022 11:35 pm
Pillar of the Community
Learn More...
Zurie's Avatar
United States
5661 Posts
 Posted 03/27/2022  12:34 am  Show Profile   Check Zurie's eBay Listings Bookmark this reply Add Zurie to your friends list Get a Link to this Reply
It wouldn't hurt to place a silica gel pack in each cardboard box to minimize the effect of moisture in the air.
Pillar of the Community
Silver101's Avatar
Canada
1081 Posts
 Posted 03/27/2022  08:23 am  Show Profile   Bookmark this reply Add Silver101 to your friends list Get a Link to this Reply
Thanks very much to you both. Sounds like I'm more or less on the right track. Good to have that confirmed...
Pillar of the Community
CoinHunter53562's Avatar
United States
2049 Posts
 Posted 03/27/2022  08:26 am  Show Profile   Bookmark this reply Add CoinHunter53562 to your friends list Get a Link to this Reply
I bought a full roll of 1955 BU Franklin halves and put them in standard 2x2s over 12 years ago. They are then stored in a red 2x2 box in a dry location. The luster today looks just the same as it did when I bought them. Not sure that you need to do anything special beyod that.
Pillar of the Community
KenKat's Avatar
United States
4085 Posts
 Posted 03/27/2022  12:18 pm  Show Profile   Bookmark this reply Add KenKat to your friends list Get a Link to this Reply
I put my higher value coins in a zip lock bag with a desiccant pack inside and then a second desiccant pack in the storage box, container or safe.
Moderator
Learn More...
Sap's Avatar
Australia
16808 Posts
 Posted 03/27/2022  6:29 pm  Show Profile   Bookmark this reply Add Sap to your friends list Get a Link to this Reply
How much moisture is a problem depends to a large extent on the environment the coins are kept in. If you live somewhere that's always damp and humid, it's going to be much more of a problem than if you lived in a desert. Airconditioning also makes things better, or worse, depending on what type of airconditioning it is.

Keeping the temperature as constant as possible is important. Because moisture in the air doesn't actually hurt the coin, so long as it stays in the air. But if the temperature of humid air drops, that moisture can condense out onto a cold metal surface, and it's those microscopic droplets of liquid water forming on the surface of your coins that is the cause of problems.

The best way to keep moisture away is to put a dessicant in the storage system with the coins. An airtight box is essential, otherwise the dessicant will simply suck up all the water in the air until it is exhausted. I don't think a cardboard box would qualify as "airtight".

If you can't remove the moisture, consider removing the air. More than one member here on the forum puts all their collection in resealable plastic bags and uses a vacuum cleaner to suck most of the air out.

Just remember, all this is ideally for long-term storage. If you're in the habit of taking your coins out and looking at them periodically (and most of us coin colletors are!), then dessicants and other moisture prevention are probably a waste of time, since you're going to be constantly letting fresh moist air in.

The other main cause of coin discolouration and unwanted toning is atmospheric sulfur. This can have many sources, including rubber, yellow paper or cardboard, nearby industrial pollution (less of a problem these days), and a kitchen where garlic, onions or eggs are being cooked. Anything designed to keep out atmospheric moisture should also keep out atmospheric sulfur, though you do have to beware of accidentally sealing a source of sulfur (like a rubber band, or a manila folder) in with your coins.

Finally, consider using a "sacrificial object". By which I mean, get yourself a large shiny piece of copper sheet, and attach it to the inside of the lid of your box, or otherwise put it in the box on top of your stored coins. Hopefully, anything nasty getting into the box will hit the copper sheet and react with it, rather than hang around inside the box and react with your coins. This same principle is what is behind the "intercept shield" coin holders. It's also a handy guide to find out just how effective your anti-atmosphere measures have been. And the best part is, it's re-usable: if the copper sheet does its job and gets all dull and toned, you can simply take it out and polish it back up to shininess again, without the whole ethical problem of having to do the same to your actual coins.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
  Previous TopicReplies: 7 / Views: 1,469Next Topic  

To participate in the forum you must log in or register.



    




Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Coin Community assumes no liability for errors. Copyright 2005 - 2026 Coin Community Family- all rights reserved worldwide. Use of any images or content on this website without prior written permission of Coin Community or the original lender is strictly prohibited.
Contact Us  |  Advertise Here  |  Privacy Policy / Terms of Use

Coin Community Forum © 2005 - 2026 Coin Community Forums
It took 0.28 seconds to rattle this change. Forums