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Cleaning coins to preserve them - green verdigris rust
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<p>[QUOTE="Ardatirion, post: 500396, member: 9204"]Post a picture before you do anything! What some collectors may consider to be "verdigris" could actually be a harmless, even helpful patina. Bronze disease has a distinct light green color and often appears in cauliflower-like formations. Try poking the verdigris with a toothpick, if it flakes away, its probably bronze disease.[/QUOTE]</p><p><br /></p>
[QUOTE="Ardatirion, post: 500396, member: 9204"]Post a picture before you do anything! What some collectors may consider to be "verdigris" could actually be a harmless, even helpful patina. Bronze disease has a distinct light green color and often appears in cauliflower-like formations. Try poking the verdigris with a toothpick, if it flakes away, its probably bronze disease.[/QUOTE]
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