Weight is within tolerance. Suspect the copper plating has been stripped. Photos not good enough to say for sure but if it is unplated: UN-PLATED...
Before 1990, mint marks were hand punched into each die somewhere below the date (on Lincoln cents). That exact location will vary, as well as the...
I do not see it. Perhaps if you indicated where? I do see possible thicker letters on MONTICELLO but thinking that is due to circulation wear - or...
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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?
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