...(TIN 1962) Which after 1961 was higher and rounded on the inner ear, a perfect use of deign reprisal and accepting the Rockwell Test implication.
...for sure but it is possible to say a certain feature is likely a Rockwell Test. It is much easier to say certain marks are NOT test marks. By...
The key question should be if rockwell testing is done to dies, what step in the die making process is the testing done. Where on the die is the...
Alright, this is what seems to be an unplated obverse EARROR. Here is an ommited image that shows an impression around a raised ball...
Rockwell C Scale: Preliminary Force = 98.07N (10 kgf) Total Force = 1471N (150kgf) Rockwell B Scale: Preliminary Force = 98.07N (10 kgf) Total...
Interesting - is the Rockwell -C hardness scale for dies done the same way as the Rockwell Test for planchets? I'm not a techie, so I don't know...
...Mint performs hardness testing on production dies. We use the Rockwell-C hardness scale. We appreciate your interest and hope this...
FYI - I have received a communication from the Mint that Rockwell Hardness Testing (C Scale) is performed by them on production dies.
...the photo by the OP. Also very interested to learn the answer to Rockwell Testing on dies...whether or not done by the Mint. Even if not done...
...However, I can tell you that based on your photo, and seeing the Rockwell Test being done at the West Point Mint (about 12 years ago), you...
...duck, and quacks like a duck, then it is a duck! However, with a Rockwell Test Mark, this way of thinking may not be appropriate. It may be...
Excellent response. I agree.. But I doubt if the OP will accept it o_O..
...an indentation on the die which would certainly be from a Rockwell test on the die IF it had other characteristics of a Rockwell Test. I think...
A raised round angle press of a ball tip. This comes on the obverse of the 1956 Lincoln Cent struck with a cancelled die. (Yes I’m sending it in...
...ESPECIALLY if the mark was in the field area of the coin. As for Rockwell tests on die blanks, I could see them doing that to make sure they...
Sorry...Rockwell Test x it’s a test done on the metal sheets that come into the mint for production It’s a topic that is very highly debated, as...
Jim, I'm beginning to think that the OP has a relative who specializes in Rockwell Test specimens. Chris
Makes sense, thank you. This indentation is smaller than a BB so instead of target practice someone must have been playing around with it lol....
The Rockwell test is an inspection test done to check if a purchased lot of planchets meets the mints spec. (I would expect The sample size and...
I have just recently heard of the Rockwell test and found a Kennedy last night that made me think of it I thought it may have been one until...
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