I have been researching plating issues on Copper Plated Zinc Cents. The information I have found has been both interesting and challenging. My...
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
Steel cent = 2.689 ± 0.1944 grams (early 1943) OR 2.754 ± 0.2268 grams (late 1943) Diameter: 19.05 mm (± 0.0508 mm) Zinc Cent = 2.500g ± 0.100g...
Many dimes from the 1960s through 1980s are found with a poorly struck perimeter. It appears to stem from a combination of inadequate upset and...
The size and description of the feature are determinates for what it is called: Die Chip, Break, Gouge, Dent, Cud: Comparing Terminology...
In earlier years my research took me into genealogy, where I taught myself to read Old German Script so I could read 18th and 19th century church...
Thank you! I do enjoy research! I am so old, I think the intellectual activity helps fight senility and dementia!
From time to time the question arises about the frequency of Doubled Dies on both sides of a coin. Here is a list of examples Chris Rhodes and I...
Thanks - I just misunderstood by "composition normal" = thought you were referring to a nickel!
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