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1971-D Kennedy Half On A Wrong Planchet?

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Yinzi50's Avatar
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 Posted 08/29/2013  11:34 pm Show Profile   Bookmark this topic Add Yinzi50 to your friends list Get a Link to this Message Number of Subscribers
The coin machine kept kicking this out. Upon a close look, it was a very odd coin. So I kept it instead of exchanging it with the teller.
It was smaller, thinner, lighter(10.2g), than a regular half.
It was not a hollow coin;
The rim showed a solid composition instead of clad to me.

Anyone knew what foreign coin that might be struck at Denver mint back 1971?


1971-D-Kennedy-Half-On-A-Wrong-Planchet?

1971-D-Kennedy-Half-On-A-Wrong-Planchet?




1971-D-Kennedy-Half-On-A-Wrong-Planchet?

1971-D-Kennedy-Half-On-A-Wrong-Planchet?
Edited by Yinzi50
08/30/2013 5:02 pm
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rpmes's Avatar
United States
388 Posts
 Posted 08/30/2013  10:45 am  Show Profile   Bookmark this reply Add rpmes to your friends list Get a Link to this Reply
Cool find. Definitely smaller than a regular half. No idea about a foreign coin that date though.
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biokemist6's Avatar
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 Posted 08/30/2013  12:22 pm  Show Profile   Bookmark this reply Add biokemist6 to your friends list Get a Link to this Reply
The late 60s/early 70s saw several wrong metal stock errors, this could possibly be a half dollar that was struck on a planchet punched from quarter metal stock instead of half dollar metal stock. It is also possible that the correct stock was simply rolled too thin before the blanks were punched.
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 Posted 08/30/2013  2:00 pm  Show Profile   Bookmark this reply Add mikediamond to your friends list Get a Link to this Reply
This half dollar makes no sense. It is simply impossible for a coin to be smaller than normal and yet possess full, strong reeding. It's possible that the edge was shaved off and a second set of false reeding was carved into it.
Error coin writer and researcher.
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jasper62's Avatar
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 Posted 08/30/2013  2:37 pm  Show Profile   Bookmark this reply Add jasper62 to your friends list Get a Link to this Reply
How much does it weigh? In grams
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Yinzi50's Avatar
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 Posted 08/30/2013  5:08 pm  Show Profile   Bookmark this reply Add Yinzi50 to your friends list Get a Link to this Reply

Quote:
How much does it weigh? In grams


10.2 gram;


Quote:
This half dollar makes no sense. It is simply impossible for a coin to be smaller than normal and yet possess full, strong reeding. It's possible that the edge was shaved off and a second set of false reeding was carved into it.


I tends to agree with you. I never heard of Denver mint strucking foreign coin for other countries.
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 Posted 08/30/2013  5:19 pm  Show Profile   Bookmark this reply Add mikediamond to your friends list Get a Link to this Reply
It doesn't matter whether the mint was striking foreign coins or not. A coin struck on an undersized planchet that remains undersized after being struck simply cannot have full reeding all around. The collar has a fixed diameter (30.61mm in half dollars). In order to reach the ridges at all points on the working face of the collar, a coin MUST expand to full diameter.

Here's another undersized half dollar with false reeding:

http://m.coinworld.com/Articles/fal...f-dollar-ser

It also has a false core.

I would be happy to personally examine your coin and possibly write it up for Coin World. I do like to feature clever fakes from time to time.
Error coin writer and researcher.
Edited by mikediamond
08/30/2013 5:23 pm
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7TF's Avatar
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 Posted 08/30/2013  5:50 pm  Show Profile   Bookmark this reply Add 7TF to your friends list Get a Link to this Reply
Why is it not possible for this coin to have been reeded at the mint?

Please post good clear photos of the actual coin. A few angled at the reeding to see if there is any scrape marks etc..

I will admit it looks odd but I don't see why someone would fake something like this. I am finding it very hard to believe.
Edited by 7TF
08/30/2013 6:31 pm
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 Posted 08/30/2013  6:30 pm  Show Profile   Bookmark this reply Add 7TF to your friends list Get a Link to this Reply
It looks like a solid core and not a clad core as the OP has stated.
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 Posted 08/30/2013  6:47 pm  Show Profile   Bookmark this reply Add 7TF to your friends list Get a Link to this Reply
How would one find out all of the different types of foreign coins struck in Denver in 1971?
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 Posted 08/30/2013  6:55 pm  Show Profile   Bookmark this reply Add LincolnGuy to your friends list Get a Link to this Reply

Quote:
Why is it not possible for this coin to have been reeded at the mint?




Quote:
The collar has a fixed diameter (30.61mm in half dollars). In order to reach the ridges at all points on the working face of the collar, a coin MUST expand to full diameter.
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Indian1's Avatar
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 Posted 08/30/2013  7:16 pm  Show Profile   Bookmark this reply Add Indian1 to your friends list Get a Link to this Reply
First thing that I would like to know is the coins
exact diameter. It does not look to be off a whole lot.
Also the thickness is not off a lot either. Let's see if this is possible. Some normal half stock was punched into just slightly smaller dia. blanks. These blanks were then upset. Then punched. Maybe with normal pressure or just a tad higher pressure. Enough anyway to just get the reeding on it. If you look at the reeding closely is does not look very sharp or deep. I guess I just wanted to know what the cutoff point would be as far as blank/planchet diameter to not get the reeding to show up at all or just enough to show. Meanwhile (i know it's a pain:) but I would count the reeds on both this coin and a normal half. The more I look at the coin the more I see a slightly weaker looking punch. Maybe it's just wear but ? Also maybe along with the above a slightly tighter collar fit. A batch may have been run with these smaller blanks.
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7TF's Avatar
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 Posted 08/30/2013  7:23 pm  Show Profile   Bookmark this reply Add 7TF to your friends list Get a Link to this Reply
Thank you Lincoln Guy.

Where did you get the quote stating that it has a fixed diameter of 30.61mm. I would like to read the book or website it came from. Are we 100% certain there is no other way it could have been reeded at the mint?
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 Posted 08/30/2013  7:29 pm  Show Profile   Bookmark this reply Add mikediamond to your friends list Get a Link to this Reply
Error coin writer and researcher.
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Yinzi50's Avatar
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716 Posts
 Posted 08/30/2013  9:50 pm  Show Profile   Bookmark this reply Add Yinzi50 to your friends list Get a Link to this Reply

Quote:
I would be happy to personally examine your coin and possibly write it up for Coin World. I do like to feature clever fakes from time to time.


Sure, Mike. Send me your address to my personal mail box and I will ship the coin to you.
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7TF's Avatar
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 Posted 08/31/2013  12:01 am  Show Profile   Bookmark this reply Add 7TF to your friends list Get a Link to this Reply
My question is where the information stating that the coin has to be full size to get the reeding. I don't read that on the US Mint website.
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