STRIKE EFFECTS UPDATE In a discussion of the existence of ridges and valleys forming a corrugated type surface on the fields of copper plated...
Agree! I appreciate the support and encouragement given to me by Ken and I value the collaboration and also having this piece in my collection!
I have been studying plating dynamics for copper-plated zinc cents. I summarized some of my findings in a paper titled PLATING SURFACE...
I have been researching plating issues on Copper Plated Zinc Cents. The information I have found has been both interesting and challenging. My...
I see how you read it ➡️ could be a possibility!
Agree. It is confusing! I have received several communications from the Mint RE: tolerances, and their format is inconsistent! I interpret this to...
You are welcome! I found it interesting and challenging!
There are two primary areas still to be addressed. One is the applicability of studies (as discussed in the paper) of copper deposition at the...
Thanks for your comment! You are focusing on a key question I have about my findings. The STM images of these crystalline structures, along with...
:pompous:
The contractor that supplies “blanks” to the mint for cents delivers RTS “blanks” (RTS = Ready To Strike). This means that the contractor passes...
I have been studying Copper Plating Dynamics. Here is a rough draft of what I have learned so far. (I have never tried to post a .pdf here so not...
Thanks! Rumor has it that Plating on proofs is thicker and that they were plated twice. I find no reliable source for that information and hope...
I am uncertain if it is acceptable to comment on an older thread. Zinc Cent Plating thickness = 8µ, according to: ALTERNATIVE METALS STUDY...
I would think they meant "Die Scratch". (not a scratch on the coin) It may be that or a Die Dent. Cohen lists a few similar, but not this one.
I am working on the types of Feeder Mechanisms used at the mint, and noticed your mentions of the modifications you worked on with this Ferracute...
I want this lot thanks Buffalo Hunter! 612 if a number is needed
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