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<p>[QUOTE=&quot;EyeEatWheaties, post: 977197, member: 26972&quot;]Uh....&nbsp; &nbsp; Ok..&nbsp; Thad,&nbsp; now I am really confused.&nbsp; Keep in mind I am a nooooob when it comes to discussing coins and the terminology associated with it.&nbsp;&nbsp; I think I need to first, understand what the definition of &quot;toning&quot; is in that book.</p><p><br /></p><p>Copper silver nickle are transition metals, meaning it has electrons in more than one shell which is means it is common for different forms of oxidation to occur.&nbsp; Why do they say hydrogen sulfide is the culprit?&nbsp; </p><p><br /></p><p>For example, pennies...&nbsp;&nbsp; I am going to ignore that they are actually a copper alloy for sake of this argument.&nbsp; Anyways.&nbsp; the first reagent that a penny (copper) is exposed to is the air we breathe, mostly nitrogen and about 20% oxygen.&nbsp; Cu + O2 =&nbsp; cupric oxide - that green stuff on the statue of liberty.&nbsp; thats the short version. there is a lot that goes on (other chemical reactions) to get that point.</p><p><br /></p><p>My point is that air and water react with coins first and that changes the color (toning?) instantaneously.&nbsp; While we can&#039;t see it initially, the amount of exposure to air and water&nbsp; will determine the rate at which it becomes visible to our eyes. I think that that, occurs long before a smelly cesspool leaches fumes into the house along with other human made contaminants. Does it not?&nbsp; </p><p><br /></p><p>Anyways....&nbsp;&nbsp; unless a coin is somehow cleaned of all oxidation and then instantaneously sealed in some type of inert gas, it is impossible to stop the reactions that occur naturally from all the crap in our atmosphere.&nbsp;&nbsp; </p><p><br /></p><p>I am running at the mouth and it has been a long time since I studied all that stuff. SO I could be wrong.&nbsp; A lot of stuff I know about coins and protecting them was explained to me by my father. Chemistry was big thing in our house.&nbsp; He has a doctorate in Chemistry, worked R&amp;D with DuPont for 30 years.&nbsp; He was a bit of mad scientist and like showing off. highlights were having him do demonstrations in our science classes&nbsp; ..&nbsp; I digress&nbsp;&nbsp; sorry.</p><p><br /></p><p>Thad, where do I find the other products that you have?[/QUOTE]</p><p><br /></p>

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