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I've seen you post things along this line multiple times now uncorrected. Doubled dies don't occur during striking. Doubled dies are the duplication of design elements on the working hub that occur during the hubbing process (the transfer of the design to the working dies / the creation of dies).
@TAN: FIRST I want to congrat. YOU. In my post and many time I say this it is " Almost impossible to still have a D/D" This do not means can not happened. The graving of the dies are complete automatic, drive by the computer with the laser process. A Die production from the main design is about 2 min.
The die come it is aligned, and the operator give OK for graving only if the alignments meet the parameters (+,-, 0.25 deg. horizontal or vertical). This it is the process's.
To happened a D/D mean that the operator for one reason of other stop the machine, and when come back this process is repeat. On this instance, could happens. Normally the operator do not has the permission to stop if the operation it is not finish. Could happened.
If John agrees, and behind him, was others monsters specialists, mean was like this. And because this kind is very hard to spot, I say : It is your Benefit on all, probably max 40K coins which will go unseen.
My field it is the production line, the alloys with theirs proprieties, the "LAM" how is say with the variations of delam, foliation, ex-foliation structural crack. The D/D attract me but I am not a good person to recognize them if it is not like example 1958. In my few hundreds of KG of coins I test for my interest probably I have D/D's but I am not able to recognize.
I am very happy to see a new D/D recognize, and come from one of the members here. One day if we will be more free to travel, and I will know is you, I will present my self and will be a pleasure for me to meet you.
I learn something,
Thanks,
Silvio
PS:, Manny things I wrote are for learning purpose.
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Posted 06/05/2021 11:47 pm
