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...
I would keep it. Not much if any extra value
^ Agree http://www.error-ref.com/die-scrapes/
Thanks. Let me say again-only one of us is a professional and not I! I am deeply honored to be a part of this conversation! The only advantage I...
Here are some helpful images (courtesy Ken Potter) to visualize what a die looks like. [ATTACH] [ATTACH]
Here is the answer to your question quoted from the Mint. If I understand this correctly, then there will never be a Rockwell Die Test showing on...
The MO of the posts by this person is quite similar to what I have seen in other groups - continuing until his removal from those groups. Is it...
Please provide a link which shows that the Mint Believed this.
Very well said! Thank you. I would encourage the poster to enlist some writing assistance - perhaps a retired English Teacher would be willing to...
The primary thrust of my paper is Rockwell Test Marks on planchets.
Because those do not represent tests on the die - they are a test on the planchet - so they are not repeated. Were they on the die, they would be...
Fred Weinberg - thank you. I am very much aware that this is a hard sell. I also am aware of the impossibility of making a definitive attribution....
:yack::yack::woot::woot::dead::dead:
I would be interested in hearing why you have reached this conclusion? I gather you disagree with some of my criteria for identifying RT?
I did show one in the paper I wrote. I make the point that you have emphasized that it is just not possible to say for sure but it is possible to...
Perhaps the question never arose! I appreciate your raising the question here. It made me realize that I did not know the answer and needed to...
The C test is done the same way on dies as with planchents (15T test), but with a different indenter and different pressures.
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