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<p>[QUOTE=&quot;GDJMSP, post: 411038, member: 112&quot;]spock - do you ever remember what you read ? I ask that because it has been discussed here so many times. But perhaps you never read those threads.</p><p><br /></p><p>Anyway, the hydrogen peroxide that Jim uses has done wonders on some of the coins he has dug. But it is a harsh chemical and like any harsh chemical they change the coin - forever. Biox is the same. But if you leave it alone the verdigris grow and continue to damage the coin even more. Once the verdigris is removed you will see little pits from the corrosion, so if left alone and it grows there will be more of them.[/QUOTE]</p><p><br /></p>

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