Since Die Varieties can be traced back to individual dies or die pairs, we can use that knowledge to attribute certain die varieties. We can compare one coin to another in order to look for the details that we suspect are characteristics of a particular die variety. Those details are expected to be exactly the same on each coin and if the details are essentially identical then it is possible to establish that a coin was struck by the same die or die pair as another coin. That is what makes a die variety a die variety!

Let me first say that “The Cherrypickers’ Guide to RARE DIE VARIETIES” Fourth Edition – Volume 1, by Fivaz and Stanton as Edited by Mike Ellis, has a notation under this one that suggests a theory of a “well placed die chip”. It is my personal opinion as well as that of many specialists that these 1997 Doubled Ear cents are indeed doubled dies.

1997 Lincoln Cent - Doubled Die Obverse - Doubled Ear

Note that the extra earlobes to the south of the primary ear lobe, taking into account some slight variance in lighting, are identical on each of these three coins. When looking for the doubled ear 1997 DDO, the ears must look identical to these or it is simply not the right one.