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All Forums Category: World Coins and Currency Forums Forum: World Coins and Commemoratives

1908 French Indochina Piastres

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Mister Kairu
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 Posted 11/13/2016  08:26 am  Show Profile   Bookmark this reply Add Mister Kairu to your friends list Get a Link to this Reply
Perhaps it is plated... Whole coin turn black from the bleach.
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thq
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 Posted 11/13/2016  08:28 am  Show Profile   Bookmark this reply Add thq to your friends list Get a Link to this Reply
Silver oxide is black, so in all probability that's what it is if they're silver. Silver cream will take it off. You might do that to one of them, but you'll end up with a shiny.

Bleach is a strong oxidizer and probably will turn silver black if you give it enough time.

These coins were cheap enough that you might want to test to make sure they are silver. It will spot and wreck the coin though.

http://www.ebay.com/itm/JSP-Silver-...351703022219
"Two minutes ago I would have sold my chances for a tired dime." Fred Astaire
Edited by thq
11/13/2016 08:33 am
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jdmern
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1949 Posts
 Posted 11/13/2016  12:47 pm  Show Profile   Bookmark this reply Add jdmern to your friends list Get a Link to this Reply
I would have serious concerns to the authenticity of the those pieces
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