Missing copper layer - either it was skipped during the copper electroplating phase or more likely, someone monkeyed with it and removed the copper. Can you see any indication of a copper color while holding the coin on an angle and rotating?
I believe with the weight shown (would be better to have an accuracy to 2 decimal points) but I would say the lack of copper showing would have been done Post Minting Process. Was it removed or covered up or chemically transformed? I dunno. 2.5 grams tells a story here.
Agreed, need 2 decimals but even with that weight will not tell us much. Specs are 2.5 with variance of .1 = 2.4 to 2.6. With Zn of 97.5% and Cu of 2.5% (Cu has slightly more mass than Zn) you would still never be able to tell - from weight - if it was plated over copper or the copper was stripped.
Mid-range XRF can read up to 50 microns and with plating (at least the garden variety) only be able to lay down 2-5 microns, any TPG could figure it out in a heartbeat. So I return to my prior comment, if you rotate at an angle under light, can you see any flashes of copper. If so, some ebay hack laid down a coat of Zn in their basement and tried to pass it off as one of those "Rare Error Coins"
Wow are you guys funny, educational, but funny I like the way you explain things I understood what everybody was saying. the weight thing was interesting .I can see how it mixes together. I just took these new pics. Looks like a hit but you can also see copper under there. What do we make of this?
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Posted 11/28/2024 10:15 pm
. Might have been removed Post Mint.
. So what does this tell you and I don't see a hint of copper coating anywhere
