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<p>[QUOTE=&quot;jeffusa, post: 559849, member: 17160&quot;]I have coin that I want to clean. It is not that valuable so if it gets screwed up not a big loss. It is Silver Canadian Maple Leaf from within the last few years. It has developed some toning on it. </p><p><br /></p><p>Now for some background as to what happened to the coin. I had it sitting on my desk for about a year on top of a postcard that listed the local coin shows. So, after about a year, I noticed the coin was getting toned and wasn&#039;t as shiny as it used to be. I thought keeping it off the desk and on the postcard would help keep the coin clean but I have been told that a lot of paper has sulphur in it and thus the reason for the coin toning.</p><p><br /></p><p>I asked others how to clean and I was given the following recommendations. Take a pot and line the bottom with aluminum foil. Then fill it with water and throw like a teaspoon of baking soda in it. Bring the water to a boil and put the coin in the water on top of the aluminum foil. This process will cause the toning to transfer to the aluminum foil. I was warned about being careful with the baking soda as too much could cause the pot to overflow. </p><p><br /></p><p>Has anyone done this before with silver or is this a little off the wall? It sounds like it could have &quot;potential&quot; as it does not involve rubbing the coin and based on previous posts rubbing a coin with anything is bad.[/QUOTE]</p><p><br /></p>

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