What was the date on this letter, please?
Acronym Glossary http://web.stanford.edu/~clint/coinacro.htm...
Nice! Which issue of CW is this?
Previously, I had reported that this Quarter appeared to be a Doctored Coin. It turns out that it is not doctored, but is, in fact, an Error – and...
Quarter missing clad, weight would be less than normal. Quarter weight missing one clad layer = 4.71 g +/- 0.347 g; missing two clad layers = 3.75...
The coin is not clad it is plated. This is corrosion with verdigris = damage.
Weight/Tolerance Susan B. Anthony Dollar (1979 - 1999) Sacagawea Dollar (2000 to Date) Presidential Dollars (2007 to Date) 8.1 grams +/- .3 grams
There are two types of die abrasion: field abrasion and device abrasion. “Field abrasion will lower the field in relation to the die’s incuse...
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
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