Yes, I think so.  This is a case where "the ears have it."  Ear shape and also hairline shapes tend to be pretty individual and distinctive.  I worked as a photo archivist for more than 25 years and this is a technique I often used for identifying persons in photographs and I continue to use it working on family history. 
My husband's uncle by marriage had such a distinctive hairline that I was able to spot it, even in negatives, with no trouble.  
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Erika Gottfried
Teaneck, New Jersey