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<p>[QUOTE=&quot;gsimonel, post: 4425651, member: 82549&quot;]First, determine whether or not any of these coins actually has bronze disease. Get each coin wet, then set each coin out on a dish and check them once a week. If bronze disease is present, you will see a green powder slowly accumulate on the surface that you can brush off easily with your hand--it will literally grow on your coin like a fungus at the spot of the bronze disease.</p><p><br /></p><p>If, after about 4 weeks or so, you don&#039;t see any powder growing out of and building up on the surface of your coin, then you don&#039;t have to worry about bronze disease. If you do see powder accumulating, then notify us right away. Left untreated, bronze disease will destroy your coin, but it works slowly, and it&#039;s very easy to treat with just distilled (not tap) water.</p><p><br /></p><p>Personally, I would never put a bronze coin in vinegar, salted or otherwise.[/QUOTE]</p><p><br /></p>

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