The weight is within expected tolerance of 2.50g +/- 0.10g. The silver color is zinc. The plating is only 8 microns thick, so it doesn't take much...
Looks like a copper plated zinc cent with plating worn off in places. What is the weight?
"The separation between the doubled design images is referred to as the spread of the doubling. The spread of the doubling can be very wide or it...
Not sure what “this” references? I see some linear plating blisters
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...
Separate names with a comma.