1983 Lincoln cent weight. ...?

I accidentally posted this twice so it was deleted. .but i received multiple messages from people wondering what happened to my thread because they wanted to share on it...

So here it is....(sorry for posting it twice at once, my mistake)

1983 Lincoln cent is supposed to weigh 2.5g and as im sure we all know that any 1983 Lincoln cent that weighs 3.1g is solid copper alloy which would be an AMAZING pay day.
Anyways...
My question is this;

I weigh all of the 1983s that i find and so far they all have weighed 2.5g (shocker, i know )...today i came across one that weighed in at 2.7g.
Why?Anything significant about that??

Thoughts/Opinions are appreciated.
Thanks everyone.

 

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As I mentioned on the deleted thread - There are Sheets that are either rolled to thin or thick before the Blank Planchets are cut (or punched) out of them. This could happen on any other coin denomination. Here are some examples from my collection.
Included are some wrong stock errors.

 

And here again is the Rolled Thick and Rolled Thin information -
(I want to share these webpages with you)
http://www.error-ref.com/rolled-thick-planchets/
http://www.error-ref.com/rolled-thin-planchets/

 

There's no rule that I am aware of, but I think a 10% threshold is generally considered within tolerance.

I'm attaching Lonesome John's table of expected weight of coins struck on the wrong stock for anyone that might be interested.

 

Paddy said it all. Great examples too! Want to share a few of them Paddy?

 

Does a coin rolled thicker or thinner add any value?

 

It depends. If the employee operating the rolling mill was drunk, then the answer would be, "NO!"

Chris

 

Sure does. It carries a premium although I don't think to many collectors really like these types of errors. I have paid $30.00 to $50.00 (certified) for thick or thin planchets and the wrong stock coins go for a few hundred dollars.

 

Hey Chris.. What flavor are US coins?






MINT FLAVORED!

 

Paddy, I'm glad you told me that because I've never thought of sucking on a coin to test for flavor!

 

It depends! If it was back in the days of non-union work involving long hours and low wages, it might be thought that they were forced to work under abhorrent conditions. In that case, coins probably tasted like SPEARMINT.

Chris

 

OMG! That's so adorable!! But at the same time it's so douchey LOL. ( I'm pretty sure douchey isn't a word.....Douche is though LOL)
I've gone off track now. ..my point is, i like your joke.

 

Excessive weight in a copper-plated zinc cent could be due to rolled-thick zinc stock or excessively thick copper plating.

 

Ok

So i have another question. ...

I've taken 7 or 8 pennies and held them or "pinched " them together between my thumb and pointer finger (stacked like they were in a roll of pennies or something )
ANYWAYS,
why is it that i couldn't get them to line up right? One of the pennies stuck out a bit further than the others. And another time i did this same thing with different pennies and one was smaller.....
Is that because of the rolled thick/thin planchet you had brought up??? Or...?

(WOW, i had a rough time explaining that LOL SORRY)

 

Thank you! This is very helpful and useful

 

Forgive me, but what does the S,C and SC stand for?

 

You know what.. there is another error called a Tapered Planchet. That's when one side of the planchet is thicker than the other. It's a little harder to explain but this might be what you are seeing also.

 

@Tess840

The Mint does have minimum tolerances for acceptability, but I don't know how this affects the thickness of the coin metal that comes out of the rolling mill. I suppose that the striking pressure of each press can vary, too, making each coin slightly thicker or thinner. Could this pressure affect the diameter of each coin? I don't know.

Chris

PS. "pointer finger".....forefinger

 

I SEE THAT ALL THE TIME! i thought it was "normal" and not valuable. ..or am i right and its not valuable?

 

S - Silver
SC - Silver Copper
C - Clad