Planchet Error? On 1956 Cent - Coin Community Forum

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Author	Replies: 8 / Views: 2,065
splatto Valued Member Canada 426 Posts	Posted 06/27/2010 11:36 pm I found a 1956 cent last week that has some odd damage on the obverse. I cannot see any evidence that a corrosive liquid came in contact with the coin. It seems the planchet may have been damaged initially. There is a series of depressions through the text "GRATIA DG REGINA" Edited by splatto 06/28/2010 12:22 am Report this Post to the Staff

vermontensium Moderator United States 16679 Posts	Posted 06/28/2010 12:41 am Looks like a huge lamination peel. Nice find! swcoin.ecrater.com Report this Post to the Staff
biokemist6 Bedrock of the Community United States 12437 Posts	Posted 06/28/2010 3:13 pm post-strike delamination Report this Post to the Staff
splatto Valued Member Canada 426 Posts	Posted 06/28/2010 4:04 pm So if I understand this, the issue is post mint, but it is not PMD as it was an error in the planchet itself that only revealed itself in circulation. Is that correct? Further, would this nickel I posted about in another thread also be post-strike delamination? https://goccf.com/t/64012 Report this Post to the Staff
biokemist6 Bedrock of the Community United States 12437 Posts	Posted 06/28/2010 4:43 pm A lamination/delamination is caused by a weakness in the alloy and is not PMD. This weakness allows the metal to separate in layers but a lamination can sometimes have "help" in its removal. The most obvious signs of intentional delamination would be tooling marks on the rim and upturned metal burs on the perimeter of the delamination. A lamination can appear as a small jagged line or a major peel(delamination) such as the one posted. Regarding the nickel in your other post, it is a copper nickel alloy correct? US nickels with a 25/75 CuNi composition are occasionally seen with lamination issues. Did you ever get a weight on that nickel? If it is underweight and absent of any tooling marks then it is quite possibly a delamination. Report this Post to the Staff
splatto Valued Member Canada 426 Posts	Posted 06/28/2010 4:53 pm Yes, it is a coin with a composition of 25/75 CuNi. Unfortunately I haven't been able to weigh it. However, I would be shocked if it were not underweight given the missing piece, and there are no tooling marks on the coin. Thanks for your explanation of lam/delam, I have a much better understanding now of how these issues come to be. Report this Post to the Staff
coinsrfun Pillar of the Community Canada 693 Posts	Posted 06/29/2010 12:08 pm splatto, the error side of collecting is truely a blast. Care must be taken tho as there are many "garage" made coins out there passing as errors. Just a thought, a cheap scanner would improve your images 10 fold without breaking the bank. Enjoy the world of errors. PM me with your address and I will forward you a Nice Large clip to add to your collection. Report this Post to the Staff
splatto Valued Member Canada 426 Posts	Posted 06/29/2010 10:31 pm CRF: I used a scanner to capture the lamination error on my nickel, but it Came out such that people thought there was extra metal, not missing metal. I'll scan the penny to show everyone. Report this Post to the Staff
splatto Valued Member Canada 426 Posts	Posted 06/29/2010 10:39 pm The cent came out much better than the nickel did. Edited by splatto 06/29/2010 10:40 pm Report this Post to the Staff
	Replies: 8 / Views: 2,065

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