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<p>[QUOTE="rysherms, post: 1770807, member: 46631"]You are asking me to analyze the surface of a metal to determine what chemical reaction has occurred from a picture. Not going to be accurate. But one thing I can say for certain is it appears to have significant toning. And considering that this coin has obviously been around since the industrial revolution when man began pumping sulfur into the atmosphere faster than the earths limestone deposits could soak it up like it naturally would do with volcanic eruptions over time, I would say it has some minor tarnishing, most likely around the rim where oils from fingers collected and accelerated the process. There also appears to be a tarnish deposit to the left of his head.</p><p><br /></p><p>Also, you can tell better by looking with a very strong magnifying glass or microscope by seeing if the area is raised. Remember, oxidation is a reaction occuring on the surface layer and "burrows" deeper as the oxidation increases. Tarnish is an actual DEPOSIT of sulfur reacting with the silver and builds up, actually makimg it thicker.</p><p><br /></p><p>People can believe whatever they want. I simply am statimg facts. Take it for what its worth.[/QUOTE]</p><p><br /></p>
[QUOTE="rysherms, post: 1770807, member: 46631"]You are asking me to analyze the surface of a metal to determine what chemical reaction has occurred from a picture. Not going to be accurate. But one thing I can say for certain is it appears to have significant toning. And considering that this coin has obviously been around since the industrial revolution when man began pumping sulfur into the atmosphere faster than the earths limestone deposits could soak it up like it naturally would do with volcanic eruptions over time, I would say it has some minor tarnishing, most likely around the rim where oils from fingers collected and accelerated the process. There also appears to be a tarnish deposit to the left of his head. Also, you can tell better by looking with a very strong magnifying glass or microscope by seeing if the area is raised. Remember, oxidation is a reaction occuring on the surface layer and "burrows" deeper as the oxidation increases. Tarnish is an actual DEPOSIT of sulfur reacting with the silver and builds up, actually makimg it thicker. People can believe whatever they want. I simply am statimg facts. Take it for what its worth.[/QUOTE]
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