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Old 4th June 2015, 11:53 PM   #6
kronckew
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Join Date: Mar 2006
Location: Room 101, Glos. UK
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put a drop of clorox bleach on silver, it will produce a black spot very quickly - within a few minutes. aluminum or nickel silver will not spot. egg yolk also will quickly turn silver black from the sulphur that produces the rotten egg smell.
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