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2009 Penny Proof And Uncirculated Mint Set 95% Copper Vs Regular Strike

 
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 Posted 08/31/2021  04:47 am Show Profile   Bookmark this topic Add victoriarose28 to your friends list Get a Link to this Message
Just want to hear your opinions with my inquiries- Is it possible that the Mint will make an error producing Regular Strike Zincoln 2009 Pennies to weigh 3.11g meaning instead of being Zinc would be 95% Copper? Though I am aware there's always a big possibility since a lot of errors has been reported and authenticated, what is your take on this?

Nonetheless, I have read when someone reported finding a regular strike that weighs 3.11g, it has always been noted that it was most probably been put out in the wild from their Uncirculated Mint Set because these coins are not meant for circulation right?

I am just confused, maybe I may have misunderstood what I read or Ihaven't came across with the latest update regarding this. Satin finish and Business Strike, differences would only be the surface and the weight of the coin right? But, how can you tell that an error has been really made?
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 Posted 08/31/2021  08:44 am  Show Profile   Bookmark this reply Add jbuck to your friends list Get a Link to this Reply
Proof coins are often found in circulation, and I am sure mint set coins find their way into the wild as well. These coins are usually spent by uninformed heirs or thieves.
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 Posted 08/31/2021  09:25 am  Show Profile   Bookmark this reply Add KenKat to your friends list Get a Link to this Reply
All of the 2009 Lincoln Cents struck for circulation aka business strike were zinc.

There were satin finish uncirculated coins struck in copper for mint uncirculated sets; these would have D and blank (Philly) mint marks.

There were also proof coins struck in copper for mint proof sets: these would have S mint marks.

If you find a 2009 penny weighing 3.11g, it came from one of the above mint sets.
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 Posted 08/31/2021  11:18 am  Show Profile   Bookmark this reply Add Conder101 to your friends list Get a Link to this Reply
I'm not sure who made the copper planchets in 2009, possibly Olin Brass, but the zinc planchets were made by Jardan Zinc (or whatever their name is now). To runs a zinc strip thick enough to produce a zinc cent weighing 3.11 grams would mean the strip would have to be 24% thicker than normal. I don't think they would miss that as standard tolerance would allow it to be up to just 4% thicker.

If you get a 2009 cent in circulation that weighs 3.11 grams it's copper and an escapee from a mint set.
Gary Schmidt
Edited by Conder101
08/31/2021 11:19 am
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 Posted 08/31/2021  7:58 pm  Show Profile   Bookmark this reply Add victoriarose28 to your friends list Get a Link to this Reply
First, with much appreciation for your replies and opinions.

I guessed the possibility of a Regular Strike 2009 Penny to weigh 3.11g has been ruled out.? And I don't mean it just got out neither accidentally nor deliberately from its Uncirculated Mint Sets Cell.

I agree to what majority of numismatic experts believed that Anything is possible to happen in the Mint but it has to be evaluated and authenticated of course. Just like what happened with the 1983/1983D Copper Pennies found where in a few remaining copper planchets from the 1982 Copper Pennies were struck as 1983 Pennies. Same diameter, same thickness but different metal compositions for few 1983 Pennies that has been found as Copper Pennies.

My question now, is there even just the slightest possibility for a Regular Strike 2009 Penny to be struck with copper planchets leftovers meant only for the Uncirculated Mint Sets?
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 Posted 09/01/2021  09:41 am  Show Profile   Bookmark this reply Add KenKat to your friends list Get a Link to this Reply

Quote:
My question now, is there even just the slightest possibility for a Regular Strike 2009 Penny to be struck with copper planchets leftovers meant only for the Uncirculated Mint Sets?


This should not have happened; as you said, anything is possible but this would be a serious violation from the mint's perspective. People would likely be fired (or worse) if something like this was discovered and determined to be intentional.

There is always the possibility of a mix up but unfortunately the similarity between mint set satin strike coins and regular business strike coins would make it very difficult to truly determine that a 3.11g coin did not come from a mint set as everything points to that being the case.
Edited by KenKat
09/01/2021 09:42 am
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 Posted 09/01/2021  12:35 pm  Show Profile   Bookmark this reply Add jbuck to your friends list Get a Link to this Reply
Possible? Maybe. Probable? Well, in twelve years no one has found one yet.


Quote:
the similarity between mint set satin strike coins and regular business strike coins would make it very difficult to truly determine that a 3.11g coin did not come from a mint set as everything points to that being the case.
I disagree.

The difference between satin finish and business strike cents is noticeable across the room. The former reflecting a brassier tinge.

(You can almost see it in the photo here.)

However, I do not recall if the satin finish comes from prepared planchets, dies, or both. If only the planchets are satin, then there would be no way to tell. However, if only the dies impart the finish, then a business strike on a bronze plachet would be noticeably different than the normal zinc issue.
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 Posted 09/01/2021  12:42 pm  Show Profile   Bookmark this reply Add jbuck to your friends list Get a Link to this Reply
Okay, Here is a 2009 bronze cent found in the wild...

http://goccf.com/t/284500

The photos do not show a difference. I suppose once they start to brown, they are going to be indistinguishable regardless of finish.
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 Posted 09/01/2021  1:04 pm  Show Profile   Bookmark this reply Add hfjacinto to your friends list Get a Link to this Reply

Quote:
My question now, is there even just the slightest possibility for a Regular Strike 2009 Penny to be struck with copper planchets leftovers meant only for the Uncirculated Mint Sets?


Unless both were mint it would be impossible to tell because as soon as it circulated and starting turning brown, I doubt you could prove it was "regular"

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 Posted 09/01/2021  1:09 pm  Show Profile   Bookmark this reply Add victoriarose28 to your friends list Get a Link to this Reply
@jbuck, First thank you, the photo you've link was on another thread where in I have asked for opinions first what they have to say about the 2 2009 Philly Cents I have attached and it was all in there before I showed the 20009 Philly Cent weighing 3.11g and now, here we go but thanks much anyway for your input!
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 Posted 09/01/2021  6:24 pm  Show Profile   Check BadThad's eBay Listings Bookmark this reply Add BadThad to your friends list Get a Link to this Reply
As always jbuck is on it!
Lincoln Cent Lover!
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