You would think that people could tell the difference between a shine silver coin and a copper colored coin, however, all the dimes that I have found have oxidized a bit and since that outer layer is 75 % copper (25 % nickel), the copper color tends to be more predominant. I do believe that is what has happened to your coin for the entire nickel is made from the exact same metals as is the clad coin, 75 % copper, 25 % nickel. When it begins to oxidize, the copper color will be more predominant.
Now, if you do send it into CONECA for analysis or attribution, it will end up in Mike Diamond's hands since you are trying to qualify the coin as off metal. If it were a doubled die, which I can not see, then James Wiles would have the honors of attributing the coin.
Since Mike has given his opinion and I do not think he will change his mind, I believe that a source outside of CONECA would be the best bet for you to pursue to see if this is what you think it is, an off metal nickel.
BJ Neff
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