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New Alloy Discovery In The Kleeberg Two Reales Series

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colonialjohn's Avatar
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 Posted 01/29/2016  06:18 am Show Profile   Bookmark this topic Add colonialjohn to your friends list Get a Link to this Message Number of Subscribers
Kleeberg 04B-L52

New alloy discovery. Tin substituted for zinc in a German Silver (Cu/Zn/Ni) type alloy. Specimen and alloy is UNIQUE for a Spanish American Contemporary Circulating Counterfeit.


http://www.ebay.com/itm/Unique-Non-...:LCA:US:1123
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Conder101's Avatar
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 Posted 01/29/2016  12:58 pm  Show Profile   Bookmark this reply Add Conder101 to your friends list Get a Link to this Reply
The SEM scan isn't very readable. What is that two high peaks? I'm assuming they must be copper line but they appear to be labeled Cobalt and Calcium. And the Nickel peak looks to be nearly non-existent. Frankly the alloy looks more like bronze than copper/nickel/tin.
Edited by Conder101
01/29/2016 12:58 pm
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colonialjohn's Avatar
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 Posted 01/29/2016  5:28 pm  Show Profile   Bookmark this reply Add colonialjohn to your friends list Get a Link to this Reply
Its appearance is silver in color with slight brown undertones. The composition is int he E-Bay description. It could be bronze with a 1% nickel addition. Its interesting that so little nickel made this specimen look like darkly toned silver. I tried with the scanner but just can not duplicate even close its real appearance. As with Davignon CC Bust Halves sometimes it does not take much nickel to achieve that silver looking effect. Its unusual tin was substituted for zinc ... before the analysis I thought it was just a darkly toned German silver issue due to its low weight.

JPL
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