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Re: Some comments on planchet metal movement during a coin strike, vis-a-vis die erosion
I have a paper in my files that includes a discussion of Flow if that would be helpful. I am attaching it here (View Post)2 -
Re: Some comments on planchet metal movement during a coin strike, vis-a-vis die erosion
..... I would also like to know if any of the weak 4 coins also show any weakness near the center of LIBERTY. I have not found any weak R in LIBERTY Have you done any work with 1922 on examining vari… (View Post)2 -
Re: Researching if there are any 1943/2-S cents with a filled in 4
I find the question most interesting! I am absolutely convinced that the weak 4/mintmark area on 43 cents is NOT the typical grease filled die which should exhibit a much more randomly placed express… (View Post)1 -
Re: Impression of finger feeder on 66 P cent die
I think it most unlikely that the Feeder Finger illustrated was the cause of the feature on this 1966 cent. The basic reason is that, as far as I know, this Finger part style was used on a Dial Plate… (View Post)3 -
Re: Tiny die rings are a thing
> 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 not a time in the past when hardness testing w… (View Post)1