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1925 Buffalo Nickel Wrong Planchet

 
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Valued Member

Canada
114 Posts
 Posted 11/22/2018  9:29 pm Show Profile   Bookmark this topic Add numidan to your friends list Get a Link to this Message
Here is a 1925 Buffalo nickel minted on a what I think is a copper planchet.

It weighs 4.87g, diameter = 20.8mm, and thickness = 1.9mm




Side by side with a 1926 Buffalo nickel


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United States
14867 Posts
 Posted 11/22/2018  9:33 pm  Show Profile   Bookmark this reply Add Spence to your friends list Get a Link to this Reply
@numidan, since it appears to be the correct size and weight, is it possible that either there is environmental toning/chemcial exposure which has caused the copper color or even a post-mint copper-plating?
"If you climb a good tree, you get a push."
-----Ghanaian proverb

"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz

Valued Member
Canada
114 Posts
 Posted 11/22/2018  9:54 pm  Show Profile   Bookmark this reply Add numidan to your friends list Get a Link to this Reply
Nothing is for sure until I have it analyzed by a XRF tester!

But it looks just right. Click on the first picture, and you will see black oxide on the surface similar to the accumulation on pennies in those days.
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44961 Posts
 Posted 11/22/2018  10:09 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
Insignificant chance this could be struck on a copper planchet. Where would this perfectly-sized blank have come from?
Edited by Coinfrog
11/22/2018 10:10 pm
Valued Member
Canada
114 Posts
 Posted 11/22/2018  10:42 pm  Show Profile   Bookmark this reply Add numidan to your friends list Get a Link to this Reply
The closes I found with the right composition in that period is:

Nicaragua 1924 1 Centavo 95% copper, 5% zinc & tin, 4.0g, 20.3mm
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United States
32057 Posts
 Posted 11/23/2018  05:51 am  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
Just a note,there are known copper buffs errors http://coinfacts.com/nickels/buffal...n_copper.htm Not saying yours is one though.
John1
( I'm no pro, it's just my humble opinion )
Searched 5+ Million Cents Since 1971
Edited by John1
11/23/2018 05:52 am
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12715 Posts
 Posted 11/23/2018  07:11 am  Show Profile   Bookmark this reply Add T-BOP to your friends list Get a Link to this Reply
Environmental discoloring on that coin . I have seen Buffalo nickels with many different colors .
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United States
31 Posts
 Posted 12/04/2018  7:54 pm  Show Profile   Bookmark this reply Add coinquest1961 to your friends list Get a Link to this Reply
I agree with T_BOP's assessment above-environmental damage. I, too, have seen a number of Buffs with that type of discoloration.
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United States
2548 Posts
 Posted 12/17/2018  3:56 pm  Show Profile   Bookmark this reply Add mycrob to your friends list Get a Link to this Reply
I lean heavily towards environmental damage leading to a change in the patina.
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 Posted 12/17/2018  7:14 pm  Show Profile   Bookmark this reply Add IndianGoldEagle to your friends list Get a Link to this Reply
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 Posted 12/18/2018  10:48 pm  Show Profile   Bookmark this reply Add fortcollins to your friends list Get a Link to this Reply
A specific gravity test would be definitive. Specific gravity of a .95 CU .05 Zn cent is 8.80 and the specific gravity of a .75 Cu .25 Ni five cent is 8.95. The closeness of the numbers necessitates a good scale and multiple measurements.
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Canada
114 Posts
 Posted 01/05/2019  4:24 pm  Show Profile   Bookmark this reply Add numidan to your friends list Get a Link to this Reply
SPP was kind to test it with his XRF analyzer. Thank you SPP!

Here is the result:

Cu: 80.95%
Ni: 18.56%
Fe: 0.12%

Most likely within the tolerance of the mint's metal composition :(
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 Posted 01/05/2019  4:27 pm  Show Profile   Bookmark this reply Add Spence to your friends list Get a Link to this Reply

Quote:
:(


Ok bummer, but it is really nice of you to follow up by posting your results!
"If you climb a good tree, you get a push."
-----Ghanaian proverb

"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz

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