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1989 Mint Proof Set Lamination Error On Penny?

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Ky1989's Avatar
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 Posted 12/31/2019  04:22 am Show Profile   Bookmark this topic Add Ky1989 to your friends list Get a Link to this Message Number of Subscribers
Picked this up today because it's my birth year. I get it home and see the nice shiny money's, and then I see the penny. Is this rare, and does it add value to the set or does it diminish the value? Not that the value matters to me, I got it because it looked cool!
1989-Mint-Proof-Set-Lamination-Error-On-Penny?
1989-Mint-Proof-Set-Lamination-Error-On-Penny?
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John1's Avatar
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 Posted 12/31/2019  07:41 am  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
to CCF. Copper plated cents can not have a lamination error. Photo is too blurry for me to help. It does not add value,in fact takes away value from the set as a whole.
John1
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Conder101's Avatar
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 Posted 12/31/2019  12:56 pm  Show Profile   Bookmark this reply Add Conder101 to your friends list Get a Link to this Reply

Quote:
Copper plated cents can not have a lamination error.

Copper plated cents CAN have lamination errors but they are rare. This however doesn't look like a lamination, it looks like a corrosion problem. It is bad there where the arrow is pointing but it also appears to have corrosion starting above T2, S2, A2, ER, and below the N in ONE.
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jbuck's Avatar
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John1's Avatar
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 Posted 12/31/2019  5:38 pm  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply

Quote:
Copper plated cents CAN have lamination errors but they are rare

Please elaborate. The zinc core should be pure and the copper plating should be pure,yes?
John1
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Conder101's Avatar
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 Posted 01/01/2020  12:56 pm  Show Profile   Bookmark this reply Add Conder101 to your friends list Get a Link to this Reply
Laminations can occur from gas bubbles in the melt (metal melts often have dissolved gases in them and they are normally held at temperature for a little while to allow these gasses to work their way out. If the melt temperature is too high some of the metal may vaporize and create bubbles. In earlier years for alloys the melts had to be stirred to mix the metals and if done too vigorously that could introduce gas bubbles as well.) or foreign material in the melt (slag etc, often a flux or artifical slag in introduced into the melt that floats on the surface to keep the top surface from creating oxides etc. It is possible sometimes for bits of theis surface slag to get into the ingots.). Laminations are much rarer now because temperature control of the melts is much better, and the induction furnaces provide their own convection stirring of the melt. This allows the melt to be held at the proper temperature longer and give time for the gasses to leave and not introduce other gases or contaminates. So laminations are not much rarer, but they are still possible. Since these some techniques are also used for alloys now you may have noticed that laminations are much rarer on other coins now as well.
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John1's Avatar
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 Posted 01/01/2020  3:18 pm  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
Thank you Conder101.
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Ky1989's Avatar
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 Posted 01/01/2020  11:54 pm  Show Profile   Bookmark this reply Add Ky1989 to your friends list Get a Link to this Reply
Conder101,

So what's your opinion on my penny?

Would this be lamination error?
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coop's Avatar
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 Posted 01/02/2020  07:43 am  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
Hard to tell from images provided. But probably a problem more than a collectible.
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Conder101's Avatar
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 Posted 01/03/2020  11:11 am  Show Profile   Bookmark this reply Add Conder101 to your friends list Get a Link to this Reply

Quote:
So what's your opinion on my penny?

See my first post, I explained what I thought about it there.
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