Too much squama frontalis?

Shatner's Toupee readers have pointed to an interesting picture of Bill Shatner, in which an unusual amount of forehead (squama frontalis to our toupologists) appears to be on display. Judging by the watermark, the image was sourced from an eBay sale - we have no idea when or what it is from. A rough guess would be the very late 1950s, perhaps 1959, by which time Bill Shatner was just beginning to wear his "Jim Kirk lace" in a professional capacity and he was certainly balding (though far from bald) at this point.


It's difficult to make any firm judgements given the low resolution of the image (it could all just be a trick of the light), but it does appear to show a combover. Above Bill Shatner's left ear at the right side of the picture is what appears to be a parting of the hair, indicating it is being combed up and over. The roundness of the hairline would appear to confirm this. But there is evidence to the contrary too:


The above image is, we believe, of a young Bill Shatner on stage in 1954. Combover? Perhaps for character effect, but certainly not to conceal any thinning - not yet. That would start slowly in 1956, gathering pace over the next few years. Does the bottom image have a lower hairline, while the "Popeye" image shows too much forehead (ergo thinning)? Must it thus be dated to a time when balding had already begun from the late 1950s?

Questions, questions...our toupologists are reluctant to make a firm call one way or another until we know more about the image. Any help in that regard form our readers is always welcome!