I see a die crack plus plating issues. The plating is in the early stage of peeling. I think it becomes a lamination issue when the zinc becomes...
I read a bit further in the article here: https://www.comsol.com/blogs/electroplating-u-s-mint-makes-penny/ The article implies that a cent is...
Thank you. I double checked my source for Zinc Cent Copper plating @ 8 microns thickness. It is: ALTERNATIVE METALS STUDY Contract Number:...
I do think that the word on the slab: "Lamination" is not used in the same way as is common in numismatics. As I look at the coin it certainly...
I think it is only available to members. Send me your email address and I will see what I can do tomorrow
Check out my paper in Errorscope “Why are Copper Plated Zinc Cents Resistant to Lamination?” It is now online at the CONECA website...
This is a large date. If it were small date @ 3.1 it would be valuable but as such worth 1 cent
Show us the coin please
Here is a resource for you to search: https://en.numista.com/
A discussion of partial collar may be found here: http://www.error-ref.com/?s=inverted+die
The last photo shows a partial collar
If you are not ready to show it publically, would you be willing to send images to me in a message?
I am most interested in seeing a link to laminations in copper plated zinc cents or in seeing some photos of such laminations.
I see pressure ridges from damage and perhaps some chips/gouges. Clear, close photos may be more revealing, but I doubt it. Some of these may be...
1985-D 1985-P Dimes "For example, a poorly-struck perimeter is pervasive among 1985-D Roosevelt dimes. It appears to stem from a combination of...
I understand! I retired 15 years ago. Since then, I have been actively involved in research: Genealogy (including teaching myself Old German...
[ATTACH] Result of heavy die abrasion to remove clash marks or gouges, etc Die Abrasion...
I do not recall seeing one on a proof. Common on circulated. Don't know if has value on a proof.
http://www.error-ref.com/progressive-indirect-design-transfer/
I am thinking this may be an Uncentered Broadstrike with Partial Collar. Weight = 3.15g Thickness = 1.34mm Horizontal diameter = 20.35mm...
Separate names with a comma.
