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<p>[QUOTE="hotwheelsearl, post: 4748191, member: 75143"]Here are some examples of using lye to remove green encrustations, including verdigris and other types of corrosion.</p><p><br /></p><p>[ATTACH=full]1159826[/ATTACH] </p><p>[ATTACH=full]1159827[/ATTACH] </p><p>On this billon/silver coin, lye removed about 90-95% of all surface encrustations.</p><p>Downside is a softening of details - especially in the reverse legend.</p><p><br /></p><p>[ATTACH=full]1159830[/ATTACH] </p><p>[ATTACH=full]1159831[/ATTACH] </p><p>On this bronze coin, in addition to verdigris there was also other types of mineral encrustation. Treatment with lye removed up to 90% of the encrustations, and did not lead to as much of a loss of detail as the silver coin exhibited.[/QUOTE]</p><p><br /></p>
[QUOTE="hotwheelsearl, post: 4748191, member: 75143"]Here are some examples of using lye to remove green encrustations, including verdigris and other types of corrosion. [ATTACH=full]1159826[/ATTACH] [ATTACH=full]1159827[/ATTACH] On this billon/silver coin, lye removed about 90-95% of all surface encrustations. Downside is a softening of details - especially in the reverse legend. [ATTACH=full]1159830[/ATTACH] [ATTACH=full]1159831[/ATTACH] On this bronze coin, in addition to verdigris there was also other types of mineral encrustation. Treatment with lye removed up to 90% of the encrustations, and did not lead to as much of a loss of detail as the silver coin exhibited.[/QUOTE]
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Verdigris Before and After with VerdiCare
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