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What is the cause of this damage to 1878 Morgan?
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<p>[QUOTE="GDJMSP, post: 1227115, member: 112"]fiddlehead - think for a minute. Do you know what happens when you dip a coin ? It's pretty simple really. Coin dips are an acid, and it is the acid that removes the tarnish/toning from the coin. And the reason it removes that tarnish/toning is because it dissolves it turning it into a solution. The dip itself will become cloudy with that solution just like mud in water does.</p><p><br /></p><p>Now, there are several steps to dipping a coin properly. But if you don't do the process properly what happens is that some dirty solution will remain on the coin. And it will settle in the receesses and protected areas. And once it dries, it turns that same color that you see on your coin. I have seen it a thousand times if I've seen it once. Coins with dip residue left on them all look pretty much the same.</p><p><br /></p><p>As for the pitting you mention, most of it is not even pitting. It's light contact marks. But there are some pits, and it makes sense that there would be. That's because coins that are generally dipped are dipped to begin with because they have dark unsightly toning, often black in color. But once toning turns black it ha salso turned into corrosion. And it is that corrosion that caused the minor pitting you see. You wouldn't have been able to see it before the coin was dipped because the heavy dark toning would have covered it up and kept the pits filled. But once dipped all that goes away and the pits become visible.</p><p><br /></p><p>As for the toning the coin has now - dip residue causes a coin to tone, and tone pretty quickly. So everything that you see with this coin is exactly normal. It is precisely what you expect to see when a coin is dipped improperly. Of course it's always a matter of degree, some are worse than others. This one, is pretty bad.[/QUOTE]</p><p><br /></p>
[QUOTE="GDJMSP, post: 1227115, member: 112"]fiddlehead - think for a minute. Do you know what happens when you dip a coin ? It's pretty simple really. Coin dips are an acid, and it is the acid that removes the tarnish/toning from the coin. And the reason it removes that tarnish/toning is because it dissolves it turning it into a solution. The dip itself will become cloudy with that solution just like mud in water does. Now, there are several steps to dipping a coin properly. But if you don't do the process properly what happens is that some dirty solution will remain on the coin. And it will settle in the receesses and protected areas. And once it dries, it turns that same color that you see on your coin. I have seen it a thousand times if I've seen it once. Coins with dip residue left on them all look pretty much the same. As for the pitting you mention, most of it is not even pitting. It's light contact marks. But there are some pits, and it makes sense that there would be. That's because coins that are generally dipped are dipped to begin with because they have dark unsightly toning, often black in color. But once toning turns black it ha salso turned into corrosion. And it is that corrosion that caused the minor pitting you see. You wouldn't have been able to see it before the coin was dipped because the heavy dark toning would have covered it up and kept the pits filled. But once dipped all that goes away and the pits become visible. As for the toning the coin has now - dip residue causes a coin to tone, and tone pretty quickly. So everything that you see with this coin is exactly normal. It is precisely what you expect to see when a coin is dipped improperly. Of course it's always a matter of degree, some are worse than others. This one, is pretty bad.[/QUOTE]
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What is the cause of this damage to 1878 Morgan?
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