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<p>[QUOTE="John Burgess, post: 4946882, member: 105098"]metal (in general), but also coins, tone or oxidize. it's a fact of life. the only way to completely stop toning is by storing coins in an actual vacuum devoid of oxygen, air, contaminants, moisture, ect. ect. which is unrealistic to say the least.</p><p><br /></p><p>people hate toning, people love toning. there can be "too much" toning that is detrimental to the surface of a coin, but to reach that stage it is usually a harsh environment, or 100+ year old coins.</p><p><br /></p><p>Don't "clean" toning for any reason, the toning will return which will lead to more "cleanings". the cleaning agent are acidic that remove toning and while one treatment or two, might not disturb the mint luster, eventually it will, and it's an irreparable condition once it's damaged, so in my opinion, it's only necessarily done when toning has reached a terminal level and could start to damage the surface of a coin, and done as a "conservation/preservation".</p><p><br /></p><p>Toning is totally natural and totally normal for the lifespan of any metal, some metals are more reactive, some are less reactive, but all metals tone over time. Under the best storage conditions toning happens very slowly, or in bad storage conditions toning happens rapidly.</p><p><br /></p><p>there are means of care to maintain your collection storage conditions so that it slows toning to a crawl, but that comes with a cost, and you have to maintain it regularly and still toning will eventually occur, it just might take 100 years before you notice a change (toning) occurring.</p><p><br /></p><p>First off you say the coins are 50 years + old. the storage materials 50 years ago weren't all that great to slow toning and some are downright detrimental with PVCs. I would say you should change ALL of the storage materials, folders, albums, flips, 2x2 cardboard holders, plastic tubes for more modern and certainly PVC free options to take that guess work out. look for "archival quality" or at least PVC free.</p><p>If going with cardboard 2x2s, I'd suggest buying a flat clinch stapler, and stainless steel or coated staples, it's worth the investment for not having to hand crimp each staple flat, or deal with rusted staples down the road.</p><p>as far as mint or proof sets, some will say remove them from the packaging, some will say keep them intact in the packaging and don't mess with it. That's more of a personal decision, and at least for me, it's one I make on a case by case basis if the set isn't reacting well and looking bad by how it was stored. If it's fine and just toning some, I leave it alone.</p><p><br /></p><p>Depends on how much work you want to put into this, and if you are going to continue the hobby in which case you'd be checking on things quite regularly, or if you are looking for a way to put everything up for another 50 years and basically look at it every few years or so when the feeling strikes you.[/QUOTE]</p><p><br /></p>
[QUOTE="John Burgess, post: 4946882, member: 105098"]metal (in general), but also coins, tone or oxidize. it's a fact of life. the only way to completely stop toning is by storing coins in an actual vacuum devoid of oxygen, air, contaminants, moisture, ect. ect. which is unrealistic to say the least. people hate toning, people love toning. there can be "too much" toning that is detrimental to the surface of a coin, but to reach that stage it is usually a harsh environment, or 100+ year old coins. Don't "clean" toning for any reason, the toning will return which will lead to more "cleanings". the cleaning agent are acidic that remove toning and while one treatment or two, might not disturb the mint luster, eventually it will, and it's an irreparable condition once it's damaged, so in my opinion, it's only necessarily done when toning has reached a terminal level and could start to damage the surface of a coin, and done as a "conservation/preservation". Toning is totally natural and totally normal for the lifespan of any metal, some metals are more reactive, some are less reactive, but all metals tone over time. Under the best storage conditions toning happens very slowly, or in bad storage conditions toning happens rapidly. there are means of care to maintain your collection storage conditions so that it slows toning to a crawl, but that comes with a cost, and you have to maintain it regularly and still toning will eventually occur, it just might take 100 years before you notice a change (toning) occurring. First off you say the coins are 50 years + old. the storage materials 50 years ago weren't all that great to slow toning and some are downright detrimental with PVCs. I would say you should change ALL of the storage materials, folders, albums, flips, 2x2 cardboard holders, plastic tubes for more modern and certainly PVC free options to take that guess work out. look for "archival quality" or at least PVC free. If going with cardboard 2x2s, I'd suggest buying a flat clinch stapler, and stainless steel or coated staples, it's worth the investment for not having to hand crimp each staple flat, or deal with rusted staples down the road. as far as mint or proof sets, some will say remove them from the packaging, some will say keep them intact in the packaging and don't mess with it. That's more of a personal decision, and at least for me, it's one I make on a case by case basis if the set isn't reacting well and looking bad by how it was stored. If it's fine and just toning some, I leave it alone. Depends on how much work you want to put into this, and if you are going to continue the hobby in which case you'd be checking on things quite regularly, or if you are looking for a way to put everything up for another 50 years and basically look at it every few years or so when the feeling strikes you.[/QUOTE]
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