Yes, thank you very much for reporting back on the negative appraisal of a DDO. Many only come for affirmation of their side and feels it is...
I propose each contestant develops and posts a thread consisting of 1-3 parts ( posts) demonstrating an important concept of the science of...
Some of the theories...... The working hub and the working die have indexing key ways that prevent the two from mating incorrectly, and...
No, it is not a DDO. It could be a thin coating of zinc which is fused to produce a brass color on the surface. Commonly done in chemistry lab....
I feel it is counter stamped and at best a medal or a altered coin. If the number was on the working die and 1 coin was stamped per new die, I...
I cleaned this thread up by deleting all of the nonsense. And if person responsible continues such, they will be dealt with. I consider it an...
If they are raised ( die scratches possibly) then they shouldn't be considered, if they are incluse ( go into the metal), they could be from...
You hit it. It is manufactured. A good machinist , using a lathe or similar, cut a shallow area in one dime and then reduced another dime to fit...
Slivers of bamboo ( like from Kebobs) are favored by many because they have more conductive tubes ( xylem) and can draw up chemicals like acetone...
You are talking about the specific heat constant of an element. It is even more difficult to do than a specific gravity. My College chem students...
Maybe, but it would be an incorrect definition according to many. Here is PNG's definition of 'doctoring'. Notice #2 which excepts the use of...
The die chip may be there, but the Coneca listed one states S/SW, and I see no indication of a RPM in that direction or possible no place in the...
I believe so also, and I think it is due to the decrease in hype/price of PM, and the balance of the participants, so thanks to you members. By...
read the important part of the post If a person can determine that a coin has been dipped, it has been damaged by the process(s) . A dip is an...
And if you read #50 he felt similar, so this is the end. Thanks. Jim
Ok, a little stronger. There is no contest. There is no need for anyone to think there is a winner or loser when absolutely No One knows what...
I think the arguments are getting a little repetitive and more towards the personalrather than the subject/object, so lets let it go on this nice...
There are really only 2 possibilities. (1) could be explained by a process within the mint at the time of striking, or (2) Post mint damage. If...
If there is any coin composition with the best chance to make a pattern as it corrodes, the CuNi alloy is it. Remember that CuNi is the only...
I agree, not a DD.
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