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 Replies: 12 / Views: 1,872 |
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Pillar of the Community
United States
1944 Posts |
here is an ineresting (to me) coin. a 1939P LWC. I believe there is a lamination issue, trailing into a Cud, or possibly just damage. I really dont know the answer. opinions are appreciated. thanks.   |
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Valued Member
United States
476 Posts |
I'd say just lamination, the " Cud" looking piece doesn't extend to the rim, which makes me think it's not a true Cud. |
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Pillar of the Community
United States
2540 Posts |
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Bedrock of the Community
United States
12437 Posts |
lamination, it also extends across the base of the bust
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Pillar of the Community
 United States
1944 Posts |
so what causes the large extra metal, near the "9"?
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Pillar of the Community
United States
3640 Posts |
If this is not a Cud, then it sure looks like a die break to me. I never really understood the term "lamination" especially when it applies to copper cents. I know what it is in general as I have found many lams. I even use that term. I can see a lamination error on clad coins but how can a 95% copper coin have a lamination ? I'm pretty sure (please correct me if I am incorrect) that the blanks (copper cent) were punched from a solid mixed combo of copper and zinc. etc. and did not have a clad mix. So if solid, how can there be a layer to peel away to begin with ? Was the blank/planchet damaged at some point before punch ? Chemical, mechanical ? ? When I see the word lamination I think of let's say, plywood or formica or a covering on your kitchen counter tops etc. I know, I have glued down many. Just curious about the term and how it became used. |
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Bedrock of the Community
United States
12437 Posts |
A lamination is the result of a weakness in the alloy, usually caused by either an alloy mixture problem or trapped gas. When the metal stock is rolled out to the proper thickness before the planchets are punched, it develops a grain that will be seen in the lamination. A lamination will either be at a shallow angle or parallel to the coin. A lamination can look like a jagged line or you can have a thin sheet peeling off the coin. When a lamination peels off, it is known as a delamination. The term typically only applies to alloyed coins. A clad coin would have a split clad layer(s) which is a weakness in the bonding of the three sheets of metal.
Edited by biokemist6
07/02/2010 9:46 pm
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Bedrock of the Community
United States
19935 Posts |
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Pillar of the Community
United States
3640 Posts |
Thanks for the info. I have found and seen many lams but was just curious as to why that term was used. Delamination I can see and understand. But now I know the process that causes lams on non clad coins. Guess it was just a word that was picked because of the peeling effect seen on some.
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Pillar of the Community
United States
1944 Posts |
it seems odd to me that one might start a thread here (meaning me), with a fairly specific question. and in this case a fairly specific follow up question. then someone offers some information, and redirects the thread. the answers after that all have to do with the redirect, and not the original question.
don't misunderstand me, I know that my questions might seem unimportant to some of you, and probably in the overall scheme of things - really are unimportant. and the knowledge and information here is generally vast and helpful - and I do appreciate that. however this is not the first question by me and others, that has gone unanswered, or redirected and lost completely in the process. if my questions are really that inconsequential, or otherwise foolish, simply let me know, and I will move along - on my own. thanks for letting me rant.
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Bedrock of the Community
United States
12437 Posts |
Quote:
so what causes the large extra metal, near the "9"?
If this is the follow-up question you are referring to, then I can answer it  It is not extra metal, just the lamination peeling up. That part of the lamination is only connected at the rim, you could slide a toothpick under it and lift it up if you were so inclined. If you are very careful, it will not break off but you will see that it is just a flapper. |
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Pillar of the Community
United States
1944 Posts |
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Pillar of the Community
United States
2669 Posts |
And the reason threads get redirected sometimes is because one question usually leads to many more.. and sometimes the conversation just doesn't come back around and answer them all. It's not on purpose and definitely doesn't mean a question doesn't have merit  Conversations around here can sometimes get completely derailed.. it's just the nature of the beast. Just redirect back if it looks like the question has been forgotten  |
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Replies: 12 / Views: 1,872 |
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Posted 07/02/2010 10:46 am
