Marketing Madness is EVERYWHERE! You see this kinda stuff all the time and think nothing of it. Then you ask yourself:
WHY DO THESE MANIKINS HAVE HALF A HEAD!?!?

Must be very flat on top.

Did the manikin makers feel kinda' nasty one day. "Fred, I'm damn tired of doing the full-headed ones. We
did all sorta' headless, from-the-neck down jobs. What about cutting right
here!!
But they left the nose...a tiny, humiliating nib of definition to suggest, at one time, there may very well have been a face on this chap.

!