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Interesting Coin: 10 Centimes, 1818 - French Guyana (Error?)

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Kingz's Avatar
Netherlands
626 Posts
 Posted 12/17/2011  4:03 pm Show Profile   Bookmark this topic Add Kingz to your friends list Get a Link to this Message Number of Subscribers
WoW I bought a nice and interesting old coin, when I wanted to take pictures I saw that the coin had some issues on the left side..
I don't really know what the deal is, if it is PMD or some mint error (see last 2 pics!). Almost all the coins I saw on the net of this type were very bad quality and / or messed up. So I don't know how much value it holds in this condition, as prices range from $45 to $500 on internet. So any information is welcome

Interesting-Coin:-10-Centimes,-1818---French-Guyana-Error?
Interesting-Coin:-10-Centimes,-1818---French-Guyana-Error?
Interesting-Coin:-10-Centimes,-1818---French-Guyana-Error?
Interesting-Coin:-10-Centimes,-1818---French-Guyana-Error?
Interesting-Coin:-10-Centimes,-1818---French-Guyana-Error?

Edited by Kingz
12/17/2011 4:05 pm
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Kingz's Avatar
Netherlands
626 Posts
 Posted 12/19/2011  12:39 pm  Show Profile   Bookmark this reply Add Kingz to your friends list Get a Link to this Reply
anyone I really look forward to hear some opinions on this coin.

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Sap's Avatar
Australia
16871 Posts
 Posted 12/20/2011  03:03 am  Show Profile   Bookmark this reply Add Sap to your friends list Get a Link to this Reply
I don't think it's an error. Weak strike, if anything.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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DVCollector's Avatar
United States
10045 Posts
 Posted 12/20/2011  03:21 am  Show Profile   Bookmark this reply Add DVCollector to your friends list Get a Link to this Reply
It almost looks like a pattern of lines in some areas--such as around LOUIS XVIII.
I don't know what to make of it, but it almost has the pattern of fabric--do you see that too?
So the question I have...does the pattern look like some kind of wear, or was it struck that way?
Edited by DVCollector
12/20/2011 03:25 am
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Kingz's Avatar
Netherlands
626 Posts
 Posted 12/20/2011  10:37 am  Show Profile   Bookmark this reply Add Kingz to your friends list Get a Link to this Reply
That was also what I thought DVcollector, I can clearly see some kind of pattern on the left side of the coin (on obverse as well as reverse!)
It appears to me as something like a part of cloth or some other fabric type thing. That perhaps was caught in the minting proces?
(I read this somewhere on the Dutch forum, that part of cloth could be caught between the coin and the die!)

Weak strike would surprise me a little bit if I'm honest, but than again you have way more experience then me in these kind of things.. so hopefully someone could verify this? And if so, is it a Partial weak strike?! Because the rest of the coin is in amazing condition...

But all in all what would this coin be worth approximately? Or what would the grade be in this condition? Because I saw several online, and the price ranges vary enormously. Also this is still one of the better examples I saw!

It still is a very interesting coin to me, also I was wondering why this year is a bit more expensive then the only other year (1846).
Because the year 1846 has only 1.400.000 mintage, and this year 2.000.000 mintage!?

They are both from Billon, which I read is a mixture precious metal (most commonly silver, but also mercury) with a majority base metal content (such as copper). But is mercury not poisonous?


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Sap's Avatar
Australia
16871 Posts
 Posted 12/21/2011  03:09 am  Show Profile   Bookmark this reply Add Sap to your friends list Get a Link to this Reply
"Billon" is the word used for base-silver (technically less than 50%). The silver is usually diluted with copper, but often with other metals such as lead or tin - whatever happened to be cheap and available. Mercury wouldn't have normally been used, as I understand it.

The alloy was not designed to look good after a while in circulation, and it rarely does. Pitted, black and ugly is the typical state of billon coins.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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maudry's Avatar
Luxembourg
588 Posts
 Posted 12/26/2011  4:17 pm  Show Profile   Bookmark this reply Add maudry to your friends list Get a Link to this Reply
Look at this one. http://www.numishop.eu/fiche-fco_26...es_1818.html
It has a similar appearance to your coin. Bad flan, bad die, too little pressure?
These have been low denomination coins so they did not get much attention from the mint workers.
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Kingz's Avatar
Netherlands
626 Posts
 Posted 12/27/2011  10:10 am  Show Profile   Bookmark this reply Add Kingz to your friends list Get a Link to this Reply
Yeah.. Thanks Maudry, it appears indeed very similair as my coin.
Some area's are not filled in completly, but it still gets priced at €120 Hopefully my coin will be in that price range too...
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DVCollector's Avatar
United States
10045 Posts
 Posted 12/27/2011  12:02 pm  Show Profile   Bookmark this reply Add DVCollector to your friends list Get a Link to this Reply

Quote:
Look at this one. http://www.numishop.eu/fiche-fco_26...es_1818.html
It has a similar appearance to your coin. Bad flan, bad die, too little pressure?
Wow, that coin has the exact same issue, whatever the cause. I'm wondering if it has something to do with the how the dies are made, or perhaps the planchets? The areas that would get higher pressure, such as the fields or the recessed letters look smoother, but the texture is visible in places too.
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biggfredd's Avatar
United States
9104 Posts
 Posted 12/27/2011  12:35 pm  Show Profile   Bookmark this reply Add biggfredd to your friends list Get a Link to this Reply
With the different colors, could it be a bad alloy mix, with striking varying by the hardness of the mix in any given part of the planchet?
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