Nope. You need to start checking to see if there are listing for these errors you're suspecting. When checking Coppercoins, neither the 1998P or 1998D have any doubled ears listed. It is very highly unlikely you will find a hitherto unknown one. Take a look, study the pix of the 1983P and 1988P doubled ears, that's what you look for. When I first started looking for that variety and a few others, I taped pix of them on my desk so I could compare, don't need to after a while.
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