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Try swabbing with ferric chloride or ferric nitrate solutions to etch the silver.
Will doing so damage the porcelain?
"damage" more than being bluey-green ?
Hence "try", generally, no, in my experience porcelain isn't affected.
You could also try a metal polish.
Thank you for your help!
Let me know how it works.
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Posted:Mar 9, 2014
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