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Cleaning my first ancient coin: surfaces question
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<p>[QUOTE="gsimonel, post: 7906439, member: 82549"]Whether to call the surface "patina" or "encrustation" is kind of a moot point with this coin. It looks like there is something corroding the coin's surface <i>under</i> the patina. </p><p><br /></p><p>Have you ever tried using electrolysis to clean a coin? This would be excellent coin to practice on. Remove everything and take the coin all the way down to bare metal. I doubt you will see much more recognizable detail once you do this, but at least you will arrest the coin's slow self destruction.</p><p><br /></p><p>There's a good chance that if you do expose the bare metal surface, your coin will develop the dreaded bronze disease (BD). This should not deter you. It is unlikely that your coin will prove to be anything special, and BD moves pretty slowly. If it does occur, it will provide you an opportunity to learn how to treat coins with it--a valuable skill if you see it happening to nicer coins. BD, though nasty, is easily treatable, and many people here are happy to talk you through the process should the need arise.[/QUOTE]</p><p><br /></p>
[QUOTE="gsimonel, post: 7906439, member: 82549"]Whether to call the surface "patina" or "encrustation" is kind of a moot point with this coin. It looks like there is something corroding the coin's surface [I]under[/I] the patina. Have you ever tried using electrolysis to clean a coin? This would be excellent coin to practice on. Remove everything and take the coin all the way down to bare metal. I doubt you will see much more recognizable detail once you do this, but at least you will arrest the coin's slow self destruction. There's a good chance that if you do expose the bare metal surface, your coin will develop the dreaded bronze disease (BD). This should not deter you. It is unlikely that your coin will prove to be anything special, and BD moves pretty slowly. If it does occur, it will provide you an opportunity to learn how to treat coins with it--a valuable skill if you see it happening to nicer coins. BD, though nasty, is easily treatable, and many people here are happy to talk you through the process should the need arise.[/QUOTE]
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