He was a well known error expert, now deceased who authenticated a Rockwell Test Mark which I pointed out in my paper could not be such and Mike...
Not sure what you are saying/asking??? Here is a clash overlay for comparison if that is your question:...
http://lincolncentsonline.com/Experimental Cents.html...
It may be weak metal flow in the bust and STATES OF area on the reverse. May be a rolled thin planchet or tapered planchet. Weight would help us...
I agree looks like corrosion which means lost weight. I will not believe aluminum without a scan for metal content. Weight?
I cannot determine what you have from your photos, but here are some resources to help you with research: Un-Plated Coins UNPLATED There are...
Congratulations
^Agree - most likely value = a few cents. Expected weight is 3.11g +/- 0.13g so it is a bit below tolerance. Possibly a rolled thin or tapered...
It looks to me like your quarter has environmental discoloration. Were it missing clad, weight would be less than normal. Quarter weight missing...
Not a clue. He appears to be grasping on to isolated pieces of information, taking those bits and pieces out of context, ignoring the application...
The size of the mark looks normal to me. Compare here: https://www.pcgs.com/coinfacts/coin/1988-d-1c-rb/3104
I have no idea what you are trying to say but nothing in your photos even remotely resembles a Rockwell Test Mark. Suggest you ask an English...
Thickness tolerance = 1.52 mm -0.102/+0.152 mm Since the weight is within tolerance, I would expect thickness also to be within tolerance. It...
@ 5.7, It is heavy. Weight should be 5.00 +/- 0.194g @ 5.07 = within tolerance
I asked the Mint a question about the effects of striking pressure on Rockwell test Marks on a planchet. Their answer is a bit confusing, but I...
Did you examine that planchet after it was struck?
That the pressure would wipe out a test mark may be intuitive but I have seen nothing to demonstrate such
I asked the Mint if there was a time in the past when a Rockwell Test was performed on the face of a die. Here is their answer: "No, there was...
It looks to me as if the area around the rim in the NE quadrant is a plating peel in combination with, and encouraged by, zinc oxidation.
Expected Dime weight missing one clad layer = 1.863 g +/- 0.091 g; missing two clad layers = 1.453 g +/- .161 g The coin weighs 1.88g - within...
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