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1940 S LWC Cracked Planchet? Lamination? PMD?

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 Posted 06/09/2021  10:32 pm Show Profile   Check Lancek's eBay Listings Bookmark this topic Add Lancek to your friends list Get a Link to this Message
Incused not raised. Except for the weird piece jutting out from the "C". That is raised.







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 Posted 06/09/2021  10:45 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
Looks like a developing lamination.
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 Posted 06/09/2021  11:00 pm  Show Profile   Check VestigeWolf's eBay Listings Bookmark this reply Add VestigeWolf to your friends list Get a Link to this Reply
Lamination indeed. Sure it started from the get go as I have several. The weird stuff is lamination peel. Just my opinion so we will wait for the experts.
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 Posted 06/10/2021  02:39 am  Show Profile   Bookmark this reply Add silviosi to your friends list Get a Link to this Reply
Your coin it is a cracked planchet. It seem like delamination but it is not. It is crack planchet. I can elaborate this but not necessary for this coin.
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 Posted 06/10/2021  04:47 am  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
If it is a cracked planchet,why is the crack not on both sides? Looks like a LAM to me.
John1
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 Posted 06/10/2021  04:57 am  Show Profile   Bookmark this reply Add stoneman227 to your friends list Get a Link to this Reply
I agree with John1 , there is no evidence of a crack in the planchet on the obverse.
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 Posted 06/10/2021  07:37 am  Show Profile   Bookmark this reply Add ijn1944 to your friends list Get a Link to this Reply
Classic lamination matter.
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 Posted 06/10/2021  07:46 am  Show Profile   Bookmark this reply Add td5173 to your friends list Get a Link to this Reply
Nice lamination peel. Not a crack.
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 Posted 06/10/2021  08:26 am  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
They don't develop a lamination issue. The issue is cold rolled on to the stock material. The issue starts when the metal is cut and circulated. So the issue is the exposure of the problem when it starts peeling. If the metal were free of the cold rolled material, then the issue would not happen. It is an imperfection on the metal. Stopped when they started with the zinc cents. Now they have different issues to deal with with the zinc cents.
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Edited by coop
06/10/2021 08:28 am
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 Posted 06/10/2021  12:22 pm  Show Profile   Check Lancek's eBay Listings Bookmark this reply Add Lancek to your friends list Get a Link to this Reply
Somewhat confused by the various answers. Prob not unusual for errors. Plus I am not normally an errors guys, so not sure I'm familiar with all the terms.

I did read somewhere that there can be pre-strike laminations. Which is what I think I have here. As the letters seem to have formed over the missing metal. Am I correct?

Also, would the extra chunk by the "C" be considered "lamination with retained metal?" Because I've heard those can be worth more. Not that I'm expecting it to be worth a lot. Just curious.

Bought a full tube of 50s-60s Canadian cents for .50 cents at an online auction. Hoping to fill a few spots in my wife's Canadian book. This was in with those. So I'm basically into it for face value. Cool find!
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 Posted 06/10/2021  7:21 pm  Show Profile   Bookmark this reply Add merclover to your friends list Get a Link to this Reply
Lancek, PM me a list of Canadian cents you still need, maybe I can help you out.
ša va bien aller

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 Posted 06/11/2021  2:28 pm  Show Profile   Bookmark this reply Add silviosi to your friends list Get a Link to this Reply
Ok. @John1 A cracket planchet do not mean that this crack will go on both sides. Look please at the interior of this crack and put a delamination coin side and you will be able to see the difference. With your experience I will not have problem that you will not see.

COOP brink a really point. During the rolling if the metal will not mixt well and accumulation of the zinc it is somewhere, the planchet will crack. The physical propriety of the zinc can not accept the rolling for well alloy of copper and will simply crack do to the structural molecular separation.

I say CRACK because it is characteristic to zinc separation.

I didn't want to elaborate this coin but if you guys and ladies want : This it is.
Edited by silviosi
06/11/2021 2:30 pm
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 Posted 06/11/2021  2:36 pm  Show Profile   Bookmark this reply Add Chase007 to your friends list Get a Link to this Reply

Quote:
I say CRACK because it is characteristic to zinc separation.

It can't be because of Zinc content,considering the composition is: .950 coopper .050 tin and zinc. (minute amount of zinc) It is a lamination issue.
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 Posted 06/11/2021  2:44 pm  Show Profile   Bookmark this reply Add silviosi to your friends list Get a Link to this Reply
Lamination by metallurgical dictionary it is synonym with rolling because the name of the rolling band or machine how you want to name it (do not matter) it is "laminor".

So yes, on rolling the "blum" (the main material after melting) we can have a few defaults: Crack, delamination etc. We can not put them on the same dish.

PS. Tin and zinc are not far one from the other on rolling proprieties.
Edited by silviosi
06/11/2021 2:46 pm
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 Posted 06/11/2021  8:01 pm  Show Profile   Bookmark this reply Add Cujohn to your friends list Get a Link to this Reply
Just a nice lam. Not a cracked planchet. Not even close to a crack.
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 Posted 06/11/2021  8:37 pm  Show Profile   Bookmark this reply Add silviosi to your friends list Get a Link to this Reply

Quote:
Not a cracked planchet. Not even close to a crack.


@CUjohn: Can you elaborate why?

I am curios to know from others theirs thinking's.

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