1982 D Large Date Copper With Monster Die Crack? - Page 2

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Author	Replies: 25 / Views: 2,390	Page: of 2

Spence Moderator United States 34425 Posts	Posted 03/10/2022 8:19 pm I'm a little late to the discussion, but this looks to me like copper added to a cent after minting. Maybe copper brazing wire? @crh, can you please post the weight? Thx. "If you climb a good tree, you get a push." -----Ghanaian proverb "The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz Report this Post to the Staff
Joshu - a Pillar of the Community United States 586 Posts	Posted 03/10/2022 8:28 pm I was about to say, "Why did you draw an arrow on the picture"? Report this Post to the Staff
silviosi Pillar of the Community Canada 6244 Posts	Posted 03/10/2022 8:35 pm Very good point from Spence and also the weight (sorry I forgot complete, maybe the age and some begin of Alzheimer) Report this Post to the Staff
Dearborn Moderator United States 96936 Posts	Posted 03/10/2022 8:37 pm Quote: I was about to say, "Why did you draw an arrow on the picture"? I thouyght the same thing at first. until the scratch went through the middle of the 'A'.. Collecting since 1972. Learning from then on "Tell me and I forget. Teach me and I remember. Involve me and I learn." - Benjamin Franklin 7070 type set coin count: 51/76 Uncirculated American Silver Eagles My American Silver Eagle Proof Collection Sacagawea Dollars Innovation Dollars Eisenhower-Dollars Kennedy-Half Dollars Washington-Quarters Roosevelt-Dimes Buffalo-Nickels 1938-2005 Jefferson-Nickels Lincoln-Cents Report this Post to the Staff
CRHunting Valued Member United States 172 Posts	Posted 03/10/2022 8:44 pm Thanks for continuing to dig into this coin, I definitely appreciate it! The coin weighs 3.09 grams. Report this Post to the Staff
Spence Moderator United States 34425 Posts	Posted 03/10/2022 9:00 pm Ok good to know the weight. It seems pretty much right where it should be. I was hoping that it would come in a little heavy as that could help confirm my theory. With that said, I still feel like this was done after the coin left the mint. I guess if you really wanted to dig into this, you could befriend a materials science professor at your local college and have them put your coin in a scanning electron microscope. Using energy dispersive spectroscopy you could get a non-destructive elemental breakdown for this raised feature to compare against a spot on the native planchet. If you do decide to go this route, it would be fascinating for you to tell us what you found. "If you climb a good tree, you get a push." -----Ghanaian proverb "The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz Report this Post to the Staff
CRHunting Valued Member United States 172 Posts	Posted 03/10/2022 9:19 pm I love the scanning electron microscope idea. I would have a lot of fun if I had any type of access to one of those. Theoretically, if I did find out it was composed of a different metal it would still leave one of the biggest questions which is when it actually occurred. Does anyone know how the grading services determine if something like this is a retained strike through versus something that was pressed into the coin post-mint? It's something I've always been curious about but this is the first time that I've had a relevant coin to ask about. My guess was always that pressing something like this into a coin post-mint would likely create some type of bulge/distortion on the other side of the coin whereas a genuine retained strike through or really any strike through would display no distortion on the side opposite the strike through. Anyone have insight on how retained strike throughs are usually verified as authentic? Report this Post to the Staff
silviosi Pillar of the Community Canada 6244 Posts	Posted 03/10/2022 10:53 pm I just read. @Spence, the SEM-EDX will be the best option. The problem with, it is only few locations has, and are use primary for health care. In my lab I have one witch is rented at 100% by agencies for forensic purpose. But I thing an EDS or an good XRF dial rotating will show very well also if the company who perform the test has the right soft. @CRH Do not expect any TPG will perform complex tests. They will just go fast and not all are well training. The VSS is good for varieties and if you specify something they will go deeper, do not expect miracles. The ANACS IMO is the only one who certify if you wrote your input. NGC and PCGS you can forgot, they start to be just marketing, power market. Contact CPP (it is moderator) on this forum. Year ago we has an discussion about XRF and I thing him has now one. Edited by silviosi 03/10/2022 10:53 pm Report this Post to the Staff
John1 Moderator United States 56855 Posts	Posted 03/11/2022 05:09 am PMD of some sort. John1 Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 03/11/2022 10:50 am Looks like something glued to the surface. The rim area may have flattened because of circulation damage, thus making that area on the rim incuse. So it is above the surface, then something was added to the coin and the coin will be heavier than normal. But if the affected area show a trench with edges rising above, then it would be like a strong scratch. The weight in this case will be close to normal. Edited by coop 03/11/2022 10:56 am Report this Post to the Staff
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